Suffered a near-fatal heart attack in January 1993 and underwent triple bypass surgery.
Was best friends with fellow actor Jeremy Sinden, who also died from lung cancer, at the same age of 45, just three months after Cadell in 1996.
Was the voice of Celeborn in the BBC radio adaptation of The Lord of
the Rings.
His trademark lopsided face was the result of complications when he was born, requiring the use of a forceps delivery.
He was educated at Bedales School in Petersfield (where aged 12 he played Sherlock Holmes in a play scripted by great friend Gyles Brandreth) and trained at the Bristol Old Vic Theatre School.