Letham performed at the
Traverse Theatre in Edinburgh, the
Royal National Theatre in London, the Odeon Theatre in Glasgow and the
Glasgow King's Theatre. His early television appearances in shows such as
Crown Court,
Play for Today and
The Sweeney gained Letham recognition among television writers and producers. He played Rab B. Nesbitt, father of the eponymous lead character, in a 1996 episode of
Rab C. Nesbitt. Letham had recurring roles in television shows
Atletico Partick as Gazza,
Hamish Macbeth as Peter the Fireman and ''Ain't Misbehavin'
as Snowy McGraw. He also made three separate appearances on both Taggart and The Bill'', playing a different character on each occasion. His final role was as Harry, Isa's estranged husband, in the sitcom
Still Game. He appeared in three episodes between 2002 and 2006, when his character was killed off. ==Death==