At KLH Sustainability we believe in doing business in a fair, transparent and collaborative manner. We treat our staff, clients, specialist consultants and peers in the way we would like to be treated. It is a philosophy that seems to work well but don’t take our word for it, see what our network has to say about working with us!



2014 Shortlisted Small Business of the Year at Business Green Leaders Awards


“Balfour Beatty and Places for People have been working with KLH on development sites at the Queen Elizabeth Olympic Park since 2014. The length of our partnership is down to their approachability and passion, which makes for a great collaborative working environment and has helped to place sustainability at the forefront of everyone’s mind. KLH have a incredible breadth of knowledge and experience so they can always pull on the relevant expertise in their team to maximise their offering. They interpret the complex range of sustainability requirements on the project and make it easier for us to deliver, which probably explains why they are now embedded right at the core of the development team!”

Kathryn Weatherburn - Balfour Beatty , Environment & Sustainability Specialist

“Four years ago when we set out to become the most sustainable development company in the world, of all the sustainability consultants we approached, KLH by far showed the greatest expertise and enthusiasm in achieving this huge feat and have continued to impress and innovate ever since.”

Ben Spencer - GS8 Development, Director

“We are building the earth’s favourite little healthy drinks factory.  What that means for us is we’re building in a sustainable way and creating a place that will be sustainable for our people, our drinkers and for the planet.  What makes KLH Sustainability a special partner in this journey is the passion and the expertise of their team.  They have a lovely way of being downright dogged in their approach, challenging us, and our supplier base, to stretch our thinking, to reach for new ideas and thereby realise our dream of a carbon neutral juice factory. We want to inspire wider change, and everyone who gets involved with KLH comes away from that experience wiser, and more motivated to make the informed and bold moves in our design that once enacted will do just that.”

Andy Joynson - Innocent Drinks, Chief Blender (or site director if we prefer the corporate title)

“It's been great to work with Kirsten and the KLH team whilst they have provided us with analysis and insight into a range of mineral sustainability issues. Their extensive experience has been really useful in overcoming tricky challenges. Outcomes have positively impacted the business and its sustainability performance, as well as the reputation of the sector.”

Dr Ian Selby - The Crown Estate, Head of Minerals and Infrastructure

“KLH Sustainability has worked closely with both Places for People and Balfour Beatty since 2014 on the prestigious Eastwick and Sweetwater project. The range of workshops, guidance documents and technical assessments they have provided have been invaluable tools for the 6 architects, 2 engineering firms and the construction team in ensuring the LLDC's challenging sustainability requirements are fully integrated into the project. Their ability to interpret complex technical assessments and deliver workshops, guidance documents and sustainability tools has been a vital asset that has aided the team in the success to date.”

Sophie Goddard - Balfour Beatty, Eastwick and Sweetwater Sustainability Manager

“The support and skills offered by KLH Sustainability is unique in the industry. Their detailed, practical knowledge of the full development supply chain from planning through to design and construction has influenced how The Crown Estate's Development Sustainability Principles are implemented and is helping to ensure that our Corporate Sustainability position is world-class, yet deliverable. Above all, I have found KLH Sustainability to be flexible and professional. Kirsten often takes the time to discuss new ideas and thoughts informally, in additioin to providing good quality reports and bringing a distinctive energy to workshops and meetings.”

Jane Wakiwaka - The Crown Estate, Sustainability Manager


“It has been great to have KLH as part of the team. Samantha made a huge difference and I must admit at the time she was off to maternity leave, I didn’t think she could be replaced, but Abby has been an absolute star. The drive and professionalism, mixed with a zest for work (and giving me gentle reminders) are a great asset to the team.”

Alistair Geddes - Balfour Beatty, Stadium Transformation Project Director

“BSkyB have developed a first class collaborative relationship with KLH in recent years, enlisting their full-time assistance & guidance to ensure that as a responsible Client we continue to raise the bar in all aspects of sustainable development & construction. The KLH team are fully embedded within BSkyB and are very much an integral part of our team. KLH are hugely experienced, professional, committed and most importantly, personable…which of course is the key to developing such an effective long-term relationship as ours.”

John Nicholson OBE - BSkyB, Programme Director

“KLH are just really clever people who keep sustainability at the heart of the project despite the pressures to marginalise it. They have an exceptional ability to design, articulate and deliver sustainable solutions that are bid winning, deliverable and extremely pragmatic. We love working with them as we know we are on to a winner.”

Anne McNamara - Shine Bid Management, Director

“As I reflect upon 50 years spent working in this great industry it’s fascinating to look back at how social and environmental awareness and action have grown to the point that it is now inextricably a part of our working lives. I have worked with Kirsten Henson and KLH Sustainability for more than six years and I am grateful for their continuing support of Balfour Beatty as we develop those social and environmental strategies that are rightly demanded by our customers and wider society.”

Stuart Fraser - Balfour Beatty, Major Projects Director


“Just wanted to say a big thank you for Chloe's time and assistance this week. She has been amazingly diligent and forensic in her work and provided us with a fantastic gap analysis document. She fitted harmoniously in to the Lucas team and has been a pleasure to work with. To be honest we didn't want her to leave!”

Danny Lucas - Lucas Fit-out and Finishing Specialists, Executive Chairman & Managing Director: 


“It has been a real pleasure to see KLH Sustainability progress so well over the last 4 years. Of course this is no surprise, because it is led and staffed by expert and passionate people who honed their skills and expertise delivering the outstanding sustainability outcomes of London 2012. I wish all at KLH continued success. You make a real and positive difference.”

Peter Bonfield, OBE - BRE, Chief Executive

“KLH is an unusual company. Their environmental expertise is underpinned by a deep appreciation of the real and practical pressures facing construction projects. They are an asset on any team.”

Alex Harvie - G&A Harvie, Director 

“It is always inspiring working with you. I enjoy your innovative approach but most importantly, you actually support the implementation of ideas. Countless people have benefited from the re-use projects that you have helped us deliver.”

Colin Zetie, Groundwork London, Economic Development Manager

“I wanted to say a big thank you for your work with us on the Horseguards and The Mall project.  Your dedication, professionalism and attention to detail were of a huge help to me, and there is no doubt, to Arena Group. [Sustainability] has been a learning curve for Arena Group and I have to say, you led that process brilliantly.”

Adam Wildi - Arena Group, Project Director (now Director, Stage One Creative)


“Working alongside Kirsten and her team has been an amazing experience even for someone who has been around for as long as me. I love the innovative way they work and enjoy seeing their vision for change. Kirsten and Samantha are extremely supportive of the work we do at Barking and Dagenham College and I welcome Kirsten’s advice and guidance at every opportunity.”

Bob Noseda - Barking and Dagenham College, Employment and Skills Manager