Doctor Who covers: 40th anniversary

Doctor Who cover: William Hartnell, February 1964

Doctor Who cover: The Dalek Invasion of Earth, 1964

Doctor Who cover: The Web Planet, 1965

Daleks on the November 1966 cover of Radio Times

Cybermen on the September 1967 cover of Radio Times

Patrick Troughton on the January 1968 cover of Radio Times

Jon Pertwee on the January 1970 cover of Radio Times

The Master on the January 1971 cover of Radio Times

Doctor Who and the Daleks on the January 1972 cover of Radio Times.

The Three Doctors on the December 1972 cover of Radio Times.

John Pertwee, Michael Parkinson, Paul Jones and Vanessa Miles on this December 1973 cover of Radio Times.

The Five Doctors on a November 1983 cover of Radio Times.

peter Davison, Sylvester McCoy, Colin Baker, Jon Pertwee and Tom Baker on the cover of Radio Times.

Paul McGann as the Doctor on a May 1996 cover of Radio Times.

A Dalek on a November 1999 cover of Radio Times.

A Sea Devil, Colin Baker as the Doctor and a Dalek on the cover of Radio Times.

David Tennant as Casanova on the cover of Radio Times.

The Tardis on a March 2005 cover of Radio Times.

A Dalek on the cover of Radio Times.

The Tardis in a snow globe on the Christmas 2005 cover of Radio Times.

David Tennant and Billie Piper on the cover of Radio Times.

A Cyberman on the cover of Radio Times.

Billie Piper on the cover of Radio Times.

Cybermen on the cover of Radio Times.

Daleks on the cover of Radio Times.

Freema Agyeman as Martha Jones and David Tennant as the Doctor.

Freema Agyeman as Martha Jones and David Tennant as the Doctor.

Hybrid Dalek Sec on the cover of Radio Times.

John Simm as the Master on the cover of Radio Times.

David Tennant as the Doctor on the cover of Radio Times.

Fifth Doctor Peter Davison and Tenth Doctor David Tennant on the cover of Radio Times.

Kylie Minogue and David Tennant on a December 2007 cover of Radio Times.

Sarah Lancashire, David Tennant and Catherine Tate on the cover of Radio Times.

David Tennant and Catherine Tate on the cover of Radio Times.

David Tennant, Catherine Tate and Ood and Tim McInnerny on the cover of Radio Times.

David Tennant, Catherine Tate, Felicity Kendal and Fenella Woolgar on the cover of Radio Times.

A Sontaran on an April 2008 cover of Radio Times.

Freema Agyeman, Catherine Tate, Billie Piper and David Tennant on the cover of Radio Times.

Davros on a July 2008 cover of Radio Times.

David Morrissey and David Tennant as The Doctor on the cover of Radio Times (&#169; BBC)

David Tennant as The Doctor and Michelle Ryan on the cover of Radio Times (&#169; BBC)

David Tennant as The Doctor on the cover of Radio Times (&#169; BBC)