Soft Landings


We combine technical knowledge of building performance with a commitment to engaging users, to help deliver more effective buildings.

Our inherent curiosity leads us to seek feedback on completed buildings and to stay in touch with their operators and users, while our attention to detail and tenacity drives us to optimise systems in use. This develops our understanding of what works well and feeds forward into future projects.

We have a long standing involvement in the development of Soft Landings and have experience of all Soft Landings stages.

Tamsin Tweddell

MSc MA CPhys MInstP

Senior Partner

I lead the Practice’s work on building performance, advocating a Soft Landings approach and encouraging project teams to engage with operational issues from design through to post-occupancy. I am keen to provide operational support to the users and managers to help them get the most out of their building.

My involvement in post-occupancy work began as Project Engineer on the Renewable Energy Systems Headquarters. After delivering the project through design to practical completion, I was able to observe the building in use for two and a half years. Through this experience, I saw first-hand just how much operational use differs from design expectations and how I could help lessen the gap. Here, and again at the Hayward Gallery, I was able to help fine-tune the systems to maximise comfort and minimise running costs.

I have also worked with University College London to investigate the energy performance gap in schools, co-authoring a paper, and I am an active member of the BSRIA Soft Landings User Group.

Ingrid Berkeley


Senior Sustainability Consultant

Buildings in the UK account for a huge quantity of carbon dioxide emissions - as high as 45% of our overall output.

Being able to make a positive difference in reducing the built environment’s consumption of natural resources, and to mitigate the impact of climate change, is enormously important to me.

One of the conditions that weighs heavily on a building’s energy performance is complexity. Too often unnecessarily complex designs mean a building performs badly because it’s difficult to operate, and things go wrong. I aspire to simplicity, and I privilege passive design over mechanical intervention.

My role covers many aspects from advising on low carbon techniques for generating energy on site, to carrying out Post Occupancy Evaluations to ensure the building performs as designed. I’m also a Soft Landings champion and joint BREEAM Manager for the Practice.

There are powerful ways we can improve the performance of our buildings and reduce their impact on the planet. I love playing my part in that outcome.

Kathryn Donald


Senior Engineer

My approach to engineering is to look at the building and its services as a single entity; rather than viewing the different services as unconnected from the building as a whole. 

The form and fabric of the building can have a significant impact on the efficiency of the services, so it is imperative that they are not designed in isolation. I produce buildings with comfortable environments that people love to visit, work or live in.

This means integrating the services so that they complement the architecture and structure. As well as making them simple and easy to use for the building’s future occupants.

For our understanding and knowledge in these areas to have the greatest impact, we should be involved in projects from the very start. In this way we can work with the architect to develop the best building possible for our client.

Henry Pelly

BA MSc MPhil

Senior Sustainability Consultant

There’s something satisfying about being in a well-conditioned space, where the temperature is just right, the air is fresh, the light-level appropriate.

But the things that make a difference to how a building feels are not immediately obvious to the eye. It’s about having the right systems in place and the processes that support efficient building operation that make the difference.

My background is in psychology, environmental design and architecture and I think this is a potent combination for making better buildings. Design can influence human behaviour, but the complexity and reality of human behaviour should also influence design.

I advise design teams on how they can apply sustainability concepts and methodologies to produce better buildings; buildings that work. BREEAM is one of the useful tools that can help meet this end. When approached in the right spirit as a holistic and robust standard rather than another form of compliance, it provides an excellent framework to ensure that the details that deliver better building survive to the end of the construction process.

Neil Cogan

BEng MRes

Sustainability Assessor

''Every project comes with its own opportunities and constraints. 

My role is to ensure that a building is doing all it can to meet the needs of its prospective occupants, now and into the distant future. And to ensure that this is being done in a way that considers the project’s economic viability, social well-being and the environmental impact.

It’s easy to be cynical about sustainability, but it’s so much more than mere ‘greenwash’. In my role, I am in a great position to ensure sustainability is central to the design process – from the procurement of materials used in construction to ease-of-use for the facilities management team.

I’ve been fortunate to develop a wide range of skills on a number of building types and scales that lends versatility to my role of Sustainability Assessor. Whether it be a one-off, single dwelling or a campus-sized commercial development, my understanding of the engineering brings added value to the design team. I can consider measures appropriate to a specific project and ensure sustainability aspirations are met through the most efficient means.

Tom McNeil

MEng MSc

Senior Building Performance Engineer

I'm really interested in low energy buildings that are comfortable, healthy and enjoyable places to be.

How people use buildings is an interesting aspect of design, especially when trying to develop low energy solutions. Ensuring that the building users can operate a building effectively is a key challenge, that without proper attention can often lead to a building that doesn’t meet performance expectations. Gaining this insight helps to ensure that the building performs as expected and that the occupants are happy and comfortable.

I have a Master’s degree in Environmental Design of Buildings, and qualified through CIBSE as a Low Carbon Consultant and an accredited Energy Assessor for Display Energy Certificates.

Soft Landings