He bought from Lord McAlpine a Roman artefact – a stone testicle – which he placed under his wife's pillow. He once chased a runaway bullock down the A3 on horseback. Onslow brought hip hop, acid house and thrash metal to Radio 3, in a series of programmes explaining them.... But he never fulfilled his ambition of declaiming Gibbon's Decline and Fall of the Roman Empire in instalments on Radio 1.