1931

June

 * Thomas Campbell Brockless, the father of Tommy Brockless, died of a heart attack at the age of fifty-seven. (TW: To the Last Man)

Unknown dates

 * Monarch's ship began to receive radio signals from Earth. (DW: Four to Doomsday)
 * The Master operated as a gangster in Chicago, but his plan was unwittingly defeated by the Fourth Doctor. (VD: The Duke of Dominoes)

January

 * 26 - Alfred Lynch, who played Commander Millington in DW: The Curse of Fenric, was born.

February

 * 15 - Claire Bloom was born.

March

 * 1 - Neville Barber (Humphrey Cook in DW: The Time Monster and Howard Baker in KAC: A Girl's Best Friend) was born.
 * 14 - Gordon Faith was born.
 * 15 - James Ellis was born.
 * 26 - George Raistrick was born.
 * 27 - Tony Calvin was born.
 * 29 - Peter Russell, who played Eldred in DW: The Time Meddler, was born.

April

 * 1 - George Baker was born.
 * 4 - Derek Martinus, who directed several Doctor Who television serials, was born.
 * 9 - Jon Rollason was born.
 * 16 - Godfrey James was born.
 * 27 - Glyn Jones, who wrote DW: The Space Museum, was born.

May

 * 8 - Douglas Camfield was born.
 * 18 - John Fraser was born.
 * 20 - Michael Spice was born.

June

 * 11 - Colin Bell was born.
 * 14 June - Kenneth Cope, who played Packard in the Doctor Who serial Warriors' Gate, was born.

July

 * 16 - Robert Banks Stewart, a writer for Doctor Who and Big Finish Productions, was born.
 * 20 - Roy Skelton was born.
 * 26 - Arnold Chazen was born.

August

 * 9 - Alethea Charlton was born.
 * 25 - Bryan Mosley, aka Buddy Windrush, who played the prop man in DW: The Daleks' Master Plan and a pirate in DW: The Smugglers, was born in Leeds.
 * 25 - Peter Gilmore was born.
 * 31 - Dennis Tate, who played a Technix in DW: The Daleks' Master Plan, was born in Iowa.

October

 * 10 - Victor Pemberton was born.
 * 28 - John Slavid was born.

November

 * 7 - Rio Fanning was born.
 * 10 - Don Henderson was born.
 * 16 - Kenneth Watson was born.

Unknown date

 * Cy Town was born.
 * Frances Pidgeon was born.
 * John Collin was born.
 * Max Faulkner was born.