Rainsford is a design and build studio founded by Rupert Rainsford Mann in 1998. The firm is based in London and has a construction office in Newbury, Berkshire. The company employs a team of over 35 designers, logistics specialists and project managers.

The studio offers design and build services, architectural interior design and planning, joinery design and manufacturing, as well as garden and landscape design. The practice works on projects in London and the home counties, including  properties that are listed and in conservation areas. Completed projects include a number of extensions, renovations and new builds.