Aspel worked as a drainpipe-layer and gardener, and sold advertising space for the "Western Mail" newspaper in Cardiff. He worked as a teaboy at William Collins publishers in London and then entered National Service. He took up a job at the David Morgan department store in Cardiff until 1955, before working as newsreader for the BBC in Cardiff in 1957. He also acted in Cardiff, in a BBC Children's Hour serial "Counterspy", produced by BBC Wales and written by and starring John Darran. Aspel played "Rocky" Mountain, a Canadian. By the early sixties, he had become one of four regular newsreaders on BBC national television, along with Richard Baker, Robert Dougall and Corbet Woodall.