 During the 1980s he was also appointed by Margaret Thatcher, then Prime Minister, to renovate the interiors of 10 Downing Street, restored 40 years previously by Raymond Erith, Terry's teacher, after war damage.Terry's work there is more assertive than Erith's.In Gloucestershire, he designed Waverton House, where he used the style made popular by Matthew Brettingham in the late 18th century, featuring a central staircase lit from above, surrounded by rooms on both floors.