Garden Science Hub with Public Exhibition, Garden Science Hub with Public Exhibition, Members Library and Archive Space.

A 4,700m² hilltop building, featuring a roof terrace at the highest point of celebrated gardens within a significant Green Belt landscape, includes advanced research labs, libraries, and classrooms. Future-proof services for the building, gardens and the wider infrastructure were provided.

The RHS Hilltop development is the UK's first dedicated centre for horticultural and environmental science, featuring research labs, exhibition spaces, libraries, classrooms, an herbarium, and a café.

Skelly & Couch provided energy modelling, environmental design, and daylight and overheating analysis, drawing on experience from projects at the Royal Botanic Gardens, Kew, and Wakehurst Place. Working closely with garden designers, they created a climate-resilient, future-proof infrastructure for the Hilltop gardens and wider site.

The building’s design maximises natural light and ventilation through rooflights, while exposed thermal mass supports passive cooling, and high-specification glazing minimises summer overheating. A sustainable urban drainage system (SUDS) integrates ponds, infiltration trenches, basins, and swales into the landscape, with possible links to an irrigation storage pond.

To mitigate noise from the nearby A3 road, the herbarium archive is enclosed by thick walls, stabilising temperatures, while ground-coupled air ducts and hygroscopic materials further manage humidity, ensuring optimal conditions.

Active design measures further enhance the building’s sustainability, cooling draws on the site's irrigation system, using river and borehole water; and energy-saving features include photovoltaic cells offsetting 10% of the building's carbon emissions, mechanical ventilation with heat recovery, and coordinated power supplies to minimise voltage drop.

Beyond delivering MEP and sustainability services for the new building, Skelly & Couch also designed MEP, SUDs and drainage systems for the surrounding gardens and the wider infrastructure masterplan.  The building form created three primary gardens— The Health and Wellbeing Garden (designed by Matt Keightley), The Wildlife Garden and The World Food Garden (both designed by Ann-Marie Powell) —along with smaller teaching and convening spaces.

RHS Wisley creates a sustainable hub for research, education, and community, with a harmonious integration of the building and landscape.

Awards

2021 – Guildford Design Award Winner Public Realm.

2021 – Guildford Design Award Winner Public Realm.

2022 – WAN Awards – Civic Institutes and Community Space Bronze.

2022 – AJ Architecture Award Finalist – Civic projects.

2023 – Civic Trust Award Regional Finalist.

2023 – Selwyn Goldsmith Award Finalist.

2023 – RIBA South East Award Winner.

An AJ Architecture Awards 2022 finalist in the Civic Projects category. A Regional Finalist for both a 2023 Civic Trust Award and a Selwyn Goldsmith Award for Universal Design. Winner of a 2023 RIBA South East Award. See the judges' citation: https://www.ribaj.com/buildings/regional-awards-2023-south-east-wilkinsoneyre-rhs-hilltop-culture-entertainment

The historic Richmond Adult Community College, which has its roots in the late 19th century (1895), has been given a new and sustainable lease of life by an impressive refurbishment and new-build development, meeting the highest standards of energy efficiency.

The £5m Special Exhibitions Gallery combines grand industrial beauty and stunning sustainable design as part of a masterplan to restore and renovate a Grade I-listed railway station, warehouse and Grade II-listed railway viaduct.

Skelly & Couch has contributed to the first phase of the ‘rescue’ and restoration of one of Scotland’s greatest Modernist buildings, designed by Gillespie, Kidd and Coia, which has lain in ruins for 25 years.

Sustainable centre within a historic landscape

A new centre with a unique, low-tech environmentally controlled and daylit gallery; restaurant, commercial kitchen and retail space. Heated by an air source heat pump and wastewater dealt with on site including a biodiverse swale system. Shortlisted for the Stirling Prize 2019.

Founded in 1977, the park is set in a former quarry on the estate of the 18th-century Bretton Hall. It was the first of its kind in the UK and remains the largest in Europe. The open-air gallery features works by renowned artists such as Henry Moore and Barbara Hepworth.

To enhance visitor experience and address reductions in public funding, a new visitor center was completed in 2019. Designed by Feilden Fowles, the 2016 Young Architect of the Year, the centre harmonises with the historic landscape while providing space for temporary exhibitions of 20th- and 21st-century artworks.

Skelly & Couch carried out full services design at the high-profile cultural destination, where the building’s internal climate is optimised for natural control as much as possible. Confronted with a site having no gas or drainage connections, a limited electrical supply and restricted services routes and zones around the building, some inventive engineering solutions were required.

Natural ventilation, solar control glazing and a green roof prevent overheating, ensuring a comfortable indoor environment. Inside the gallery, 10,000 unfired clay bricks form an innovative low-energy environmental control system that maintains optimal internal conditions and significantly reduces the reliance on air conditioning.

Complementing this, a sophisticated control system and humidity buffer—incorporating hygroscopic materials—work alongside a standard thermal wheel heat recovery unit to regulate temperature and humidity. A highly efficient scheme was developed using an electric heat pump to deliver both heating and domestic hot water to basins, eliminating the need for conventional hot water flow and return systems and thereby reducing energy consumption by over 50%. Additionally, underfloor heating provides a consistent sense of warmth throughout the space, even during periods of high visitor traffic and cold weather outside.

Designed with sustainability at its core, The Weston preserves the integrity of its setting while enhancing visitor comfort, engagement, and the Park’s cultural offering.

Awards

2019 – RIBA Stirling Prize Finalist

2019 – RIBA National Award

2019 – RIBA Yorkshire Award Winner

2019 – RIBA Yorkshire Building of the Year

2019 – RIBA Yorkshire Client of the Year

2021 – Civic Trust Award Winner

2021 – Civic Trust Awards Regional Finalist (Yorkshire & Humberside).

2022 – EU Mies van der Rohe Award Nomination. It was one of 18 projects longlisted in the UK, among 449 works in 41 countries featured. 

Winner of Regional Theatre of the Year at The Stage 2021 Awards, Grade II-listed Theatr Clwyd is one of Wales’ major cultural assets and is undergoing a ‘once-in-a-lifetime’ £35m redevelopment.

The Grade I-listed Theatre Royal Drury Lane, owned and managed by Andrew Lloyd Webber’s LW Theatres and built originally in 1812, is set to regain its status as the prime venue for musical theatre in London. 

Skelly & Couch are part of the winning multidisciplinary team led by Hopkins Architects which has beaten four other contenders in a RIBA competition to develop Twickenham Riverside. 

Skelly & Couch is presently involved in the refurbishment and building extension of the Warburg Institute which addresses the building’s infrastructure issues but also instigates the development of a new lecture theatre in a 1950s library.

At the gateway to Watford Business Park, the flagship development of a highly sustainable series of refurbished buildings will serve as a catalyst for regeneration of the local area and beyond.