Conservation architects · Twickenham

Conservation architects and surveyors for historic buildings

A small, dedicated team in Twickenham, working with skilled traditional craftspeople on buildings of international significance.

The Painted Hall at the Old Royal Naval College, Greenwich, after conservation
The Painted Hall, Old Royal Naval College, Greenwich

Clients include

Historic building conservation, from survey to repair

Our portfolio consists almost entirely of buildings of international significance, from royal palaces and cathedral chapels to castles, ruins and country houses.

Selected work

Award-winning conservation

From a fire-gutted dockyard church on the Isle of Sheppey to the "Sistine Chapel of the UK" in Greenwich. All projects

A mason carving new stone ornament at Buckingham Palace

Research first, then repair with the right craftspeople

At Buckingham Palace, our care in sourcing new stone addressed a problem that had been unresolved for over 150 years. At Clifford's Tower, every damaged stone was tested and every one retained, because history lives in the surface of historic materials.

On site we encourage close collaboration with conservators and specialist trades. We give talks and lectures, host study visits for trainee architects, surveyors and conservationists, and keep training ourselves, on SPAB courses and working parties, at West Dean and in The National Archives.

Our expertise
RIBA National Award 2025Sheerness Dockyard Church, with Hugh Broughton Architects
RIBA Reinvention Award 2025Sheerness Dockyard Church
RICS UK Project of the Year 2024Sheerness Dockyard Church
Sussex Heritage Trust 2025Wakehurst Place, Commercial category winner
Civic Trust National Award 2024Clifford's Tower, York
Three Civic Trust Awards 2020The Painted Hall, the only project ever to win three

A close-knit team dedicated to historic buildings

Led by Martin Ashley MVO, a SPAB Scholar in 1976, with partners Kieran Kintrea, Giulia Baldin, James Campen and Ayaka Takaki. 60% of our qualified architects are women, against an industry average of 40%.

RIBAAABC accreditedSpecialist Conservation ArchitectRICS Certified Historic Building ProfessionalSPAB
Meet the team
A conservator cleaning carved stone vaulting at St George's Chapel

Caring for a historic building?

Tell us about the building and what it needs. Yvonne Loftus is the first point of contact for every enquiry.