Graham McTavish (born 1961) is a Scottish television actor. He has played the character Warden Ackerman in Red Dwarf in five episodes of series 8. McTavish has also had many supporting roles in ...

From Wikipedia, the free encyclopedia. Graham McTavish (born 1961) is a Scottish television actor. He has played the character Warden Ackerman in Red Dwarf in five episodes of series 8.