Passivhaus Affiliate

Members: Other Consultants

Accredited Passivhaus Design

Buckhurst Hill, Essex

Thinking of a new Passivhaus or EnerPHit retrofit? Accredited Passivhaus Design are enthusiastic about creating attractive buildings that are space efficient, comfortable to be in, contribute to their surroundings and use little energy. We use the Passivhaus method as it is proven in design and on site. Our Certified Passivhaus Designer has over 25 years' experience of creating housing for individuals, social landlords and care providers, from masterplanning to detail design. We can work with other architects and can provide construction stage energy calculations and working drawings for contractors. We can take you through the design, planning and construction stages of creating something seemingly impossible - Really comfortable, attractive buildings that cost very little to run. Our website can tell you more. Accredited Passivhaus Design is a trading division of the Tooley & Foster Partnership.

Website: http://www.accreditedpassivhausdesign.com

Abba Energy Ltd

London

Website: http://www.abbaenergy.co.uk

Adams:Scott

Coleford

Adams:Scott is a low energy building design and construction consultancy with a collaborative approach. We work with architects, developers and self builders to design and construct very low energy and comfortable buildings.

Website: http://adamsscott.com

Alan Clarke

Lydney

Alan Clarke is an energy consultant and building services engineer specialising in low energy and passivhaus buildings.

Alchemilla Architects Ltd

Chard

Alchemilla Architects Ltd is a RIBA Chartered Practice based in rural Somerset in the Blackdown Hills. Our work ranges from single houses and small housing estates to extensions and refurbishment projects. A development of high end holiday lets, a conversion of a listed building to offices and a swimming pool are part of our current workload. We see architecture as integral to the built environment, and pride ourselves in providing a full service from inception to completion. Part of this is a strong commitment to energy efficient buildings with our principal architect being a certified Passivhaus Designer.

Website: http://www.alchemillaarchitects.co.uk

Alex Baines

Poulton

Altechnica

Milton Keynes

Altechnica is a Zero Carbon / Super-Passive Solar Architecture, Technology Innovation and Renewable Energy Consulting practice established by Dr Derek Taylor in 1990 to carry out commissions, research and projects. Altechnica reviewed renewable energy potential in Uttlesford, Merton BC and in Kent. They are currently the architect/renewable energy consultant for a Super Passive Solar™ Zero Carbon House in West of England, which combines zero carbon design with innovative technologies to achieve one of the most energy efficient houses in the UK, designed to achieve PassiveHaus standards. Altechnica is developing a family of innovative Altechnica Zero Emissions Dwellings™ intended to result in zero emissions of CO2 and to obtain practically all of its energy requirements from building-integrated renewable energy and require no space heating.

Website: http://www.altechnica.co.uk

Austin & Hobbs Ltd

Exeter

Austin and Hobbs Ltd were formed in 2006 and are cost consultants covering commercial aspects of the construction industry, from initial cost planning, production of bills of quantities, estimating, procurement and project surveying. We cover all forms of construction sectors from education, retail, industrial, new build housing, retrofit works to housing, eco buildings. Our client base ranges from direct clients, town councils, social landlords, quantity surveying practices, design consultants, main contractors, developers and sub-contractors.

Website: http://www.austinandhobbs.co.uk

Baker Ruff Hannon LLP

Taunton

Baker Ruff Hannon was established in 1979 and provides project management, cost management and associated services. The majority of our projects are in social housing and we work with a number of organisations throughout the South West in this regard. We are currently engaged in a small Passivhaus scheme with one of our Clients and we are trying to encourage other providers to adopt the criteria to achieve environmental and economic benefits for their tenants. Our Partners have been engaged in the development of a Passivhaus swimming pool in the United Kingdom, which is a new if not unique concept.

Baobab Consulting & Design

Exeter

Bashkal Associates

London

Website: http://www.bashkal.com

Beech:Cole Design & Management

Stone

bere:architects

London

Bere:architects is one of the UK’s foremost Passivhaus practices and pioneers of ecological and environmental design. Founded by Justin Bere, the practice has won numerous design and sustainability awards and completed the first certified Passivhaus non-domestic retrofit in the UK, London’s first Passivhaus and two low cost, social housing, certified Passivhaus homes in south Wales. In 2012 bere:architects won the BRE’s competition to build Passivhaus housing on their Watford Innovation Park, is working on several new builds and retrofits to Passivhaus standard and is peer reviewing a new low energy library at UEL. Research through UK Government funded Technology Strategy Board monitoring and independent cost analysis work, and the sharing of these findings through presentations and publications, is a vital and integral part of bere:architects’ work.

Website: http://www.bere.co.uk/

Beverley Clifton Morris (BCM)

Manchester

BCM is a sustainable building services design consultancy based in Manchester City Centre and a member of the Association of Consulting Engineers. Experts in their field since launching in 2002, BCM specialises in creating affordable low carbon and renewable energy Eco friendly solutions for sustainable buildings, developments and refurbishments. BCM has delivered some of the lowest carbon buildings in the country using Passivhaus principles. This has been achieved without incurring the premium costs usually associated with low carbon buildings.

Website: http://www.bcmconsulting.co.uk

BSRIA

Bracknell

BSRIA is a test, instruments, research and consultancy organisation, providing specialist services in construction and building services. It provides testing of all building types for Building Regulation Compliance as well as advice and investigations for building performance, energy efficiency and occupant comfort. As a member-based association, profits are invested in on-going support for the industry to make buildings better.

Website: http://www.bsria.co.uk

Build Collective

Bath

Website: http://www.buildcollective.co.uk

Buildingregsairtest

Lyth Hill

CBG Consultants

Oxford

Website: http://www.cbgc.com

Cocreate Consulting

London

Cocreate are an accredited Passivhaus Certifier. We can help you achieve the Passivhaus standard and provide design advice to help architects, developers, and engineers improve the comfort and reduce the environmental impact of buildings over the long term - saving on operating and asset costs in the process. We help clients set the right specification, help contractors achieve the required standards, and offer training to professional teams to build understanding and improve decision making.

Website: http://www.cocreateconsulting.com

Colin Smith & Judith Wilson: Architects

Arbroath

Specialising in contemporary architecture for twenty years, we work closely with our clients to create unique solutions for projects of all sizes, constraints and budgets, which are practical, functional and flexible. We believe in Passivhaus and eco home principles and employ them to produce environmentally aware, low energy, efficient houses and buildings that are a joy to use and enhance the lives of those living or working in them. Natural light and space are always exploited to the full, together with the considered use of natural, traditional and sustainable local materials and, above all, careful detailing to achieve beautiful modern designs.

Website: http://www.csjwa.co.uk

Conker Conservation Ltd

Canterbury

Chartered building surveyors specialising in sustainable design, new-build, conversions, refurbishment and historic building conservation. A family business established in 1999 with experience in using modern and traditional methods of construction including rammed chalk, rammed earth, straw bales, timbrel vaulting (creating large span domes without formwork using clay tiles), super-insulated masonry and timber frame. Working with Passivhaus standard since 2005. We work mainly in the south east on residential, commercial and education projects. We are nuts about sustainability.

Website: http://www.conker.cc

CRS Future Build Ltd

Barnsley

Cundall

London

Julian is a chartered building services engineer and Fellow of CIBSE with a specialism in sustainable/environmental building design, client design advice and low carbon master planning. He has 27 years of experience. Projects include the Royal Ontario Museum in Toronto, Tower Place in London, the Parkview Battersea Power Station scheme. He has recently completed his own certified Passivhaus in Hampshire and is a regular judge for the Construction News Awards and the RIBA sustainable building award. In 2016 he chaired the UKGBC task group – delivering Building Performance.

Website: http://www.cundall.com

Cutland Consulting Limited

Milton Keynes

Cutland Consulting Limited provides strategic support for energy efficiency and sustainability, working from Board level right down to the technical ‘coalface’. Director Neil Cutland has a rare combination of technical knowledge and commercial experience, resulting in “a refreshing pragmatism”. Neil is one of the authors of the BREDEM model and the SAP, and in his previous roles at Inbuilt and BRE he was instrumental in bringing the Passivhaus standard to the UK. Neil subsequently served on the Passivhaus Trust Board.

Website: http://www.cutlandconsulting.co.uk

Cygnum Timber Frame Ltd

Stowmarket

Established in 1996, Cygnum is a leading supplier of timber frame structures in the UK and Ireland. Cygnum’s Passive 350 building system received Passive House certification in December 2013. Some of our key technical staff are qualified Passive House designers and we have been the selected timber frame supplier on many Certified Passive House and near Passive House buildings including the award winning Oakmeadow school in Wolverhampton. More recently Cygnum have been awarded the contract to design supply and install the timber frame structure, glulam frame, cellulose insulation and airtightness layer for the high profile University of East Anglia Exemplary Low Carbon Building Project at Norwich Research Park.

Website: http://www.cygnum.co.uk

David Edwards: Architectural & Energy Services

London

David is a freelance architectural consultant and researcher based in London. He studied architecture at Centre for Alternative Technology and is a Certified Passivhaus Consultant. He has experience in architectural practice across a number of sectors and provides consultancy in energy modelling using PHPP and thermal bridge analysis. He collaborated with Good Architecture on the 2012 BRE UK Passivhaus Competition (awarded runner-up) and has been a guest tutor at UCL and UEL in London. David is developer of "designPH" for the Passive House Institute; a plugin for Trimble SketchUp that will provide a 3D visual interface to PHPP. This was first presented to the 17th International Passivhaus Conference at Frankfurt in April 2013.

Dragon Renewables

Stocking Green

Jonathan Cooke t/a Dragon Renewables. MCS and PH accredited Consultant. We have experience in designing hot water and heating systems for Passivhaus and non-PH buildings. We design and install solar thermal, solar PV, biomass boilers,(chip, log and pellet) stoves with back boilers. Ground Source and Air Source Heat pumps integrated with underfloor heating.

Website: http://dragonrenewables.co.uk/

e-Griffin Consulting Ltd

St Neots

Irrespective of whether you are a housing association, hotel or manufacturing company building a new factory with a multi-million pound budget or a home owner with a £100,000 extension, our passion and expertise is always focussed on keeping your building costs under control and on budget. e-Griffin Consulting, Chartered Quantity Surveyors, work for clients in local government, industry , retail, schools, architects, developers, hospitality, health and leisure, charities to name just a few, plus homeowners providing unbiased full building estimation and cost analysis service for new construction and renovation work. We also specialise in providing Quantity Surveying services for Passivhaus construction. The e-Griffin Construction Cost Calculator which can be accessed from www.e-griffin.uk provides accurate estimates free of charge for anyone wanting to know "What are the likely building costs?" This calculator enables you to make important decisions at the conceptual design stage of your project before any plans have been drawn up.

Website: http://www.e-griffin.uk

Eco Design Consultants Ltd

Milton Keynes

Eco Design Consultants are an award winning Architectural Practice, lead by Alan Budden who is a Chartered Architect and European Certified Passivhaus Designer. Our ethos is to provide FUN enjoyable buildings that are highly comfortable, inherently low energy by, using its form and fabric intelligently so to insure world resources are maintained for our children. We have a number of low energy projects including new build housing, retrofit and extension of houses and community buildings. Our services also include: Architectural design, code for sustainable homes assessments, OC EPC’s, LEED assessments, Renewable energy feasibilities, home energy surveys and providing CPD’s.

Website: http://www.ecodesignconsultants.co.uk

Encraft

Leamington Spa

If you’re passionate about cutting carbon or reducing your energy bills, it’s reassuring to have Encraft’s expertise on your side. Our respected consultants are leaders in their fields and have been involved in some of the most innovative projects of recent years. We specialise in building physics (including Passivhaus), distributed energy projects and related web applications, for a client base ranging from individual householders to large organisations in both the public and private sectors. Whether you need advice about the technical aspects of your project or wish to equip employees with new skills, Encraft is the industry leader.

Website: http://www.encraft.co.uk/

Evolved Design Ltd

Oswestry

Evolved Design offer a Design & Build Service using products & systems that are natural, environmentally friendly, and energy efficient. All of our Carbon Smart systems and products can be adapted to suit any design of home to meet current regulations or the advanced requirements of Passivhaus or the Code for Sustainable Homes. As qualified architects, technicians, energy assessors, & insulation specialists, we understand the importance of good building fabric and encourage our clients to build to the highest standards possible. We take you through the planning and regulation processes and can provide a complete turnkey service if required. Evolved Design to suit you, your plot and your budget.

Website: http://www.evolved-design.co.uk

Four Walls

Bristol

Website: http://www.fourwalls-uk.com

GM Moore & Associates

Hailsham

Go Green Engineering

Chudleigh

Go Green Engineering are Devon based Mechanical Engineers, that specialise in Passivhaus installations. Our aim is to consult, design, install, commission systems that are applicable to Passivhaus. We understand the high levels of workmanship required to ensure systems run efficiently while ensuring they apply to Passivhaus standards. We are highly skilled engineers that have a great background within Passivhaus, we are used to working alongside architects & clients so that both design & installations are carried out with high attention to detail. To see some of our current work, please follow us on Twitter https://twitter.com/gogreenengineer

Website: http://www.gogreenengineering.co.uk

Graeme Bloomfield

Friston

Passivhaus designer

Website: http://www.fielden-construction.co.uk/about.html

Green Building Store

Huddersfield

Green Building Store is a manufacturer and supplier of cutting edge sustainable building products. As well as offering a wide range of Passivhaus products ( including MVHR, windows, wall ties and airtightness products), Green Building Store also now offers Passivhaus training, construction and consultancy services. Its construction division – Green Building Company – recently built the Denby Dale Passivhaus – the UK’s first cavty wall Passivhaus. To get cavity wall to perform to Passivhaus standard the team had to develop many original design details, especially around junctions. These details are outlined in various free resources available from Green Building Store’s website, including a technical briefing and film on the project.

Website: http://www.greenbuildingstore.co.uk

Green Footsteps

Kendal

Diane Hubbard of Green Footsteps is no ordinary air tightness tester. In addition to being a member of the iATS Competent Person Scheme for the airtightness testing of domestic and non-domestic buildings, she is also a CEPH Consultant and CEPH Tradesperson. Diane is an academic author on the energy consequences of unwanted air movement in existing buildings and has a passion for sustainable building, led by her MSc (Centre for Alternative Technology). With a wealth of experience with new and existing buildings, Green Footsteps offers a value for money Passivhaus air tightness testing service across Northern England and Southern Scotland.

Website: http://www.greenfootsteps.co.uk

Green Peaches CIC

Colchester

Greenbox Associates Ltd

Southsea

Greenbox Associates Ltd is a low energy building design consultancy which supports architects and designers to deliver low impact, low energy and highly comfortable buildings. As specialists in Passivhaus and certified designers, assistance can be given in developing a highly performing building envelope to achieve Passivhaus, higher levels of the Code for Sustainable Homes and Zero Carbon Homes compliance.

Website: http://www.greenboxassociates.co.uk

Greener Future Consultancy Ltd

Norwich

Greenheart Sustainable Construction LLP

Bristol

Website: http://www.greenheartuk.com/

Hawton Mead Sustainable Design

Brighton

Hawton Mead provides a complete range of sustainability services for homeowners and professionals, from energy assessments, advice and information, to in-depth consultancy, training and support. With a unique mix of in-depth technical know-how and creative design skills, we don’t just make buildings more energy-efficient and environmentally friendly: we also make them more comfortable and practical. Based in Brighton, Sussex, we specialise in housing and mixed-use developments, new and old, including heritage properties. Our multidisciplinary team is led by Maria Hawton-Mead, an experienced and highly-qualified sustainability consultant. We offer a professional but friendly working relationship, developing tailor-made solutions to suit individual circumstances and budgets, with Maria’s experience of retrofitting her own home giving her added insight into the client’s perspective. We firmly believe that the best route to long-term sustainability is to maximise energy efficiency, though we also have wide-ranging expertise in renewable technologies to meet residual needs. As a certified PassivHaus consultancy, we design and assess homes using the PassivHaus principles and planning package, as well as delivering continuous professional development (CPD) training in PassivHaus design.

Website: http://www.hawtonmead.co.uk

Herz & Lang GmbH

Weitnau/Allgau

Herz&Lang GmbH - The designers for energy efficient buildings. The Company is situated near Munich, specialized in zero carbon standards with both new and old buildings. Dieter Herz started with Low Energy Buildings in 1995 and designed the first Passivhaus constructed in Bavaria 1998. Herz&Lang was founded in 2002. The foundation of the company was the early entry into the Passivhaus market. The company has long term experience in relation to overall design of buildings and quality assurance. This led to a steady developed knowledge about Passivhaus certification standards in residential nonresidential buildings and refurbishments (EnerPHit).v With this special knowledge the company started with their Passivhaus consulting services in 2005 and accompanied certified Passivhaus buildings with a summary of buildings costs reaching in 2013 over 400 million euro in several countries, with a diverse range of focused teams and clients. The company is also accredited with Passivhaus Certification.

Website: http://www.herz-lang.com

King Shaw Associates Ltd

Bristol

King Shaw Associates is a UK based practice specialising in low carbon, sustainable design for buildings, providing a high level of expertise across a wide spectrum of engineering disciplines. Our engineering design solutions are developed uniquely for each project of any size rather than an off the peg engineering solution. What distinguishes KSA in delivering Passivhaus projects, as an energy and occupant comfort standard, is the use of thermal modelling for predicting any issues during the design stage (ie. overheating, condensation, thermal comfort). Various design and construction alternatives (U-values calculation, solar control methods, passive design strategies and others) are then provided.

Website: http://www.kingshaw.co.uk

Lean Green Consulting

Fort William

Lee Evans Elements

Canterbury

Lee Evans Elements is an environmental building consultancy specialising in low energy design, Passivhaus, and responsible retrofits. Our work ranges from whole house retrofits to new education buildings, where we can provide advice on planning and concept designs, detailing and energy consumption analysis. As Certified Passivhaus Designers, we can offer: • Design advice at all stages for low energy homes and buildings. • PHPP (Passivhaus Planning Package) calculations to calculate the predicted heat loss and energy demand. • Planning and Detail drawings with reduced and eliminated thermal bridging. • Thermal bridge analysis using THERM software. • Full architectural services for Passivhaus developments.

Living Logic

Chester

Certified Passivhaus designers and consultants with specialist knowledge in sustainable building design, energy efficiency and renewable energy technologies. Plus with our in-house LED lighting and design company Liht, Living Logic offer a whole package of solutions bespoke to each individual building. Whether new build or refurbishment, domestic or non-domestic, Living Logic work with individuals and organisations wanting to live in a low energy world, promoting the development of low and zero carbon buildings that enhance our lives physically, environmentally, economically and socially.

Website: http://livinglogic.co.uk

Locate Architects

Dunblane

Locate Architects was set up in January 2004 by Chris Morgan, formerly a Project Architect with Gaia Architects. We offer a range of services but specialise in sustainable development and ecological design. Building on certification in Building Biology (buildings and health) and Permaculture, Chris is a certified Passivhaus designer and a member of the International Passivhaus Association and its UK partner, the Passivhaus Trust. With four passivhaus projects on the books, Locate are looking to add (certified) passivhaus design to a wide range of existing expertise in ultra low energy, healthy and ecological design. We work closely with Passivhaus Associates (see below) in Scotland, and with Warm Associates (see below also) as certifiers to provide a complete passivhaus design package in Scotland and the North of England.

Website: http://www.locatearchitects.co.uk

MBC Timber Frame UK Ltd

Co Tipperary

Website: http://www.mbctimberframe.ie

Parsons + Whittley Architects

Swaffham,

Parsons & Whittley is an award winning architectural practice based in Swaffham, Norfolk. The practice includes in house registered Code and Energy Assessors and believes firmly in sustainable architecture. With a team of 7 the practice is experienced in all types of buildings with a project list ranging from private residences through housing and property development, to commercial projects such as office developments and car showrooms. Currently on site with 14 Passivhaus units in Wimbish, Essex for Hastoe Housing Association, which it hopes will be the first multi unit rural housing scheme in the UK to achieve Passivhaus certification.

Website: http://www.parsonswhittley.com

Passitherm Ltd

Alloa

Website: http://www.passitherm.com

Passivhaus Associates

St Andrews

We provide design, consultancy and build support services for Passivhaus and "close to" Passivhaus projects. Graham Drummond and Chris Morgan are the principals. Our first project, the Craigrothie certified Passivhaus, was completed in 2011. We are based in Fife, Scotland and are actively involved with the Passivhaus Trust Scotland Group.

Website: http://www.passivhausassociates.co.uk

Passivhaus Design Solutions

Rickmansworth

Certified designers providing specialist advice and a sustainable approach to low energy design based on Passivhaus principals.

Website: http://www.passivhaus-design-solutions.com

PD Consulting

Hereford

Point 6 Projects

Devon & London

P6P have over six years’ experience of delivering certified Passivhaus homes and buildings. A company specialising in delivering high performance, low energy homes & buildings with an emphasis on Passivhaus. We work with you the client to create your dream passivhaus home in the UK. Our ethos is to provide you with 100% value through delivery, innovation & transparency. We have delivered certified Passivhaus flats and houses for both councils and private clients. Our experience with Passivhaus can save a client on both time and money. We have the skills within our team to either design and build your building or just take on the building element and work closely with your architect.

Website: http://www.point6projects.com

Powered Living

Winchester

R-gen Developments Ltd

Manchester

Website: http://r-gen.co.uk/

Rees Pryer Architects LLP

Bury St Edmunds

Rees Pryer Architects are an award winning chartered practice based in Bury St Edmunds. Our projects range from individual domestic schemes to complex multi-disciplined projects. We pride ourselves on providing well-considered and innovative design solutions that meet both Clients’ needs and reflect the character of the area in which we live and work. We believe that the design solutions and integrated systems that are most successful in their implementation are those that are mostly passive, and in essence, simple in their application. By working closely together these principles can be developed to ensure the Client realises a thoroughly successful long term solution.

Website: http://www.reespryer.co.uk

Richard Haig

Nottingham

Website: http://www.rharchitect.co.uk

Richard Maxton Architecture

Ayr

Richard Maxton has been designing homes, house extensions and award winning commercial developments for nearly thirty years. During this period Richard has worked all over Scotland and has an enviable reputation for securing Planning Consents for difficult sites. As a Certified PassivHaus Designer Richard has the skills to design low energy homes to the PassivHaus Standard. A Chartered Technologist, Richard takes great care to accurately establish a definitive Client Brief at the outset to ensure the Client ‘dream’ is realised. Richard provides a single point of contact service and works with a network of professionals to deliver projects on-time and on-budget.

Website: http://www.richardmaxton.co.uk

Seesaw Studios

London

Simmonds.mills

Hereford

SIMMONDS.MILLS architects is an architectural practice based in Shropshire and Herefordshire, established in 1992. The practice has pioneered a diverse range of techniques exploring energy efficiency and ecological materials through its’ built projects. Now the practice policy is to work towards all projects achieving ‘Silver’, ‘Passivhaus’ or ‘Gold’ energy targets outlined in the AECB’s Carbonlite Programme. The practice has a wide C.V. of built projects, and has worked for public organisations, charities, community groups and private individuals throughout the UK.

Website: http://www.simmondsmills.com

Stroma Technology

Wakefield

Website: http://www.stroma.com

Sustainable Solutions

Salisbury

T Richard Jones (Betws) Ltd

Ammanford

The Healthy Home Ltd

Chichester

The Healthy Home Ltd designs, project-manages and carries out residential retrofits for health, comfort and energy efficiency and specialises in using the appropriate modern and natural materials to ensure a moisture robust result. The director of the company, Richard Bendy, is a certified Passivhaus Consultant who has also successfully completed the AECB’s Carbonlite Retrofit course; he is a BPEC certified MVHR/MEV designer/installer/commissioner as well as being a NAPIT registered domestic electrical installer with a special interest in the use of circadian/sunrise/sunset lighting to improve occupant health.

Website: http://www.thehealthyhome.uk

The Outbuilding

Brighton

The Outbuilding provides affordable and accessible technical advice for low energy construction. Working throughout the South East with a friendly and personable approach to building design and consultancy. Experts in PHPP and Passivhaus.

Website: http://theoutbuilding.co.uk

The Tooley & Foster Partnership

Buckhurst Hill, Essex

Tooley & Foster have over 120 years' experience of designing Environments that work and we believe that Passivhaus is the most reliable way to achieve comfortable low energy buildings for the future. We have award winning expertise in designing housing, care and residential homes, commercial buildings and schools. We are happy to work with clients at all stages of projects - from concepts, initial PHPP modelling, detail design, construction information through to Passivhaus certification.

Website: http://www.tooleyfoster.com/sustainability-services.asp?pagename=sustainability

Trunk Low Energy Building

Reading

Trunk is a Chartered Building Consultancy dedicated to delivering very low energy and Passivhaus homes. Expert in both new build homes and refurbishment projects, including listed buildings, Trunk is committed to best practice. We have handled many projects, everything from the highly contemporary to quirky listed buildings, infusing all of them with low energy and Passivhaus principles that go way beyond mere compliance. Trunk’s offering is simple but highly flexible. It spans design, consultancy and project management, with expertise every step of the way. Proud Winners of Constructing Excellence 2013 'Achiever of the Year' and Finalists for 'Project of the Year' and 'Leadership and People Development'. Trunk's Mike Jacob was named as one of Building Magazine's 50 Rising Stars of Sustainability.

Website: http://www.trunkclt.com

Viridis Building Services Ltd

Newark on Trent

Williams Energy Design

Braintree

Willmott Dixon

Letchworth Garden City

Website: http://www.willmottdixon.co.uk