Modelo Prison in Barcelona has, like any other prison, its fair share of drug abusers and homosexuals. It also has an HIV infection rate of 50 per cent. Official estimates of the extent of AIDS in prisons across Europe vary widely. In Britain, where no official survey has been done, it is put at 0.1 per cent.

Can we in Britain learn lessons from this disastrous epidemic before it is too late? John Edginton examines the world of AIDS behind bars, and asks if a prison sentence could soon be a sentence of death?

An OTMOOR production for BBCtv