MI6 Team: Bill Tanner

Bill Tanner is MI6's Chief of Staff. Tanner is a Bond ally appearing regularly in the novels of Ian Fleming and John Gardner, as well as in Kingsley Amis' "Colonel Sun" (1967), but he has never been a regular cinematic character. His biggest cinematic role was in "For Your Eyes Only" (1981), in which Tanner was given a bigger role while M was "on leave," due to Bernard Lee's death that prevented him from reprising his role as M in the film.
In 1965, Amis wrote the authorised spin-off "The Book of Bond, or Every Man His Own 007", a tongue-in-cheek guide to being a spy. The book is not credited to Amis, but rather to Lt. Col. William "Bill" Tanner. Actors who have played Bill Tanner in Bond films are: Michael Goodliffe, James Villiers, Michael Kitchen and Rory Kinnear.

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Actor:
Michael Goodliffe (1974) (uncredited)

007 Film:

• The Man with the Golden Gun (1974)

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Actor:
James Villiers (1981)

007 Film:

• For Your Eyes Only (1981)

Actor:

Photo © EON, United Artists, Danjaq LLC

Michael Kitchen (1995, 1999)

007 Films:

• GoldenEye (1995)
• The World Is Not Enough (1999)

Photo © EON, United Artists, Danjaq LLC

Actor:
Rory Kinnear (2008–present)

007 Films:

• Quantum of Solace (2008)
• Skyfall (2012)
• SPECTRE (2015)

See the whole MI6 TEAM here