After racing he became creator, developer and operator of Tucktonia, a south-coast leisure park in the 1970s and 1980s.
[citation needed] During the early 1980s, he was a pioneer of the pound shop concept in the North East of England and opened units in Scarborough, Newcastle upon Tyne, Stockton and moved into the South as well with another five units along the South Coast and one in Hatfield.
[citation needed] He was notable as the person responsible for starting Alan Jones in Formula One in 1975 with a privately owned Hesketh 308.
[4] This was not the first time Jones had driven for Stiller as he had done so in the works March Formula Atlantic car in the 1974 UK John Player championship.
Stiller was a life member of the British Racing Drivers' Club (BRDC), and lived in Christchurch, Dorset, England with his wife Annie.