Graham Mancha is an expert in mid-century modern furniture who has appeared on The Repair Shop (BBC) and The Repair Shop: Fixing Britain. He operates as a dealer in original post-war furniture and design, with a particular specialism in the work of Charles and Ray Eames, whose iconic chairs, lounge furniture, and plywood designs he both trades and restores.

His company, Graham Mancha Limited was incorporated on 13 May 2008 and is situated in Wing, Bedfordshire. Graham focuses on post-war furniture, lighting, and design objects, combining restoration with design expertise.

Mancha appeared as an expert on The Repair Shop, broadcast by the BBC. He contributed to episodes in 2018 and later appeared on The Repair Shop: Fixing Britain (2020), working on items such as mid-century chairs.

On the show, he collaborated with other experts to restore design-led furniture, particularly pieces requiring specialist knowledge of modern materials and construction techniques.