Career
He is probably best remembered for his childhood role of Gary Hargreaves in the first three series of the popular children"s television programme Grange Hill, in which he starred from 1979 to 1981. Farmer had a range of earlier childhood roles, and also went on to appear as a teenager and young adult in various programmes, notably the lead role in the 1983 British Broadcasting Corporation drama Johnny Jarvis and role of Justin James from 1984 to 1989 in the highly successful comedy-drama series Minder. From 1985 to 1987 Farmer starred in Relative Strangers, a Channel 4 sitcom with Matthew Kelly playing Mark"s father Fitz.
The sitcom was a spin-off from an Independent Television comedy, Holding the Fort (1980-1982).
He also appeared in the 1987 television drama film, Mister Corbett"s Ghost starring Paul Scofield and John Huston. They performed around London until 2000.