Barley Studio

A York-based stained glass studio founded in 1973, specialising in the conservation and restoration of historic stained glass and leaded lights for cathedrals and churches across the UK.

Devlin Plummer Stained Glass

South Norfolk stained glass studio specialising in the conservation and restoration of historic windows, with experience across more than 500 churches, cathedrals and public buildings in Norfolk, across the UK, and in Europe.

Donald Insall Associates

One of the UK's most eminent conservation architecture practices, founded in 1958, working on the country's most significant historic buildings — from Westminster Hall and Blenheim Palace to Chester Cathedral and Wentworth Woodhouse.

Locker & Riley

Award-winning fibrous and lime plasterwork specialists based in Essex, restoring decorative ceilings, cornices and enrichments in some of the UK's most significant historic hotels, theatres and livery halls.

Q. Bytheway Leadworking Contractors

West Midlands leadwork specialists established in 1982, carrying out lead roofing, flashings, ornamental casting, and the restoration of historic lead pipes and hopper heads for heritage buildings, churches, and listed properties across England, Scotland, and Wales.