Halford was the first to be approached to join the unit by Pullman. Softly spoken and methodical, he is often used by Pullman as a mentor, confident and unofficial second in command. Halford left the force to care for his wife who was injured in a hit and run incident. Her subsequent death still affects him and he often talks at her graveside. He abruptly leaves the unit to live in France, with only Pullman guessing he had a terminal illness.
Halford is played by James Bolam
Sunderland born James Bolam studied at the Central School of Speech and Drama, graduating to win roles in Z Cars and the gritty northern films A Kind of Loving and The Loneliness of the Long Distance Runner.
But it was his role in the sitcom The Likely Lads that cemented his fame. Roles in When the Boat Comes In, The Beiderbecke Trilogy and Only When I Laugh followed. James is married to his When the Boat Comes In co-star, Susan Jameson.