1976 According to some accounts , 1976 was among the years the Third Doctor spent exiled on Earth . ( COMIC : " The Man in the Ion Mask " ) Other sources indicate that the exile had already ended by this year . ( TV : " Mawdryn Undead " , PROSE : " No Future " , " Wolfsbane " ) Shirley Williams was the Prime Minister of the United Kingdom in this year . ( PROSE : " No Future " ) James Callaghan of the Labour Party became Prime Minister in this year . He served in that position until 1979 . ( AUDIO : " The Oseidon Adventure " ) Dated events . In January , ( PROSE : " No Future " ) the Fourth Doctor , Sarah Jane Smith , and Harry Sullivan went to Scotland to assist the Brigadier and UNIT in investigating the damages caused by a Skarasen . They uncovered and stopped a Zygon plot to sabotage the International Energy Conference and turn Earth into a suitable replacement for their homeplanet Zygor . Harry decided to stay on Earth instead of continuing to travel with the Doctor . ( TV : " Terror of the Zygons " ) In the timelines where the Doctor never cured Harry of lycanthropy , Sullivan transformed into a werewolf each full moon after returning to Earth . Three months after the Zygon incident , Harry killed Leslie Heron during a full moon . Shortly afterwards , Harry left UNIT to join NATO . ( PROSE : " Wolfsbane " ) On 12 January , John Dixon was born . ( AUDIO : " Cuddlesome " ) On 1 May , ( COMIC : " The Man in the Ion Mask " ) the Third Doctor , Jo Grant , and UNIT prevented from gaining the power of Azal , last of the Dæmon s . ( TV : " The Dæmons " ) The Master was imprisoned at the Ayelesbury Grange Detention Facility . ( COMIC : " The Man in the Ion Mask " ) On 28 May , Deborah and Barry Castle got married . Also on this day , the Eighth Doctor spent some time with a young widow named Claudia . ( PROSE : " Father Time " ) In June , the Vardan s attempted an invasion of Earth with the Monk ' s assistance . ( PROSE : " No Future " ) At the height of summer , the Twelfth Doctor visited Blackpool and encountered the S ' Qwatch . ( COMIC : " A Cold Snap " ) On 11 July , a meteorite landed in New York City ' s Central Park , temporarily giving Alice Trefusis super - powers . ( AUDIO : " Starfall " ) Undated events . In San Francisco , Carolyn McConnell met the Eighth Doctor and Sam Jones , who were hunting vampire s . ( PROSE : " Vampire Science " ) In some timelines , ( PROSE : " The Enfolded Time " ) Brigadier Alistair Gordon Lethbridge - Stewart retire d from UNIT and became a maths teacher at Brendon Public School . ( TV : " Mawdryn Undead " ) Just after telling the UN he was retiring , Lethbridge - Stewart was taken from time by the Accord and copied to help stabilise the temporal instability concerning the 1970s and 1980s being melded together . He was returned to his present time and retained no memory of the incident . ( PROSE : " The Enfolded Time " ) " How I Saved the World " by Alexander Lullington - Smythe was published by Aphrodite Press . It was " very publicly discredited " in 1978 . ( PROSE : " Salvation " ) At St Benedict ' s School in Perivale , Chad Boyle almost hit Dorothy McShane with a brick , but was stopped by the adult Ace . In an alternative timeline , Boyle succeeded in hitting her , and killed her . The Timewyrm recruited him in her battle against the Seventh Doctor and Ace . ( PROSE : " " ) The Eleventh Doctor and John Jones had a run - in with the East German authorities while searching for the Entity in Berlin . ( COMIC : " Conversion " ) Two priests who were members of the Order of Saint Peter pursued a vampire from Poland to Los Angeles and destroyed it . One of them stayed behind to found a chapter of the order there , and later became the father of Becky Lee Kowalczyck . ( AUDIO : " Minuet in Hell " ) The portmanteau film " Doctor Demonic ' s Tales of Terror " was made in Britain . It starred Sir Jack Merrivale , Nyssa and Johanna Bourke . The film was directed by Martin Ashcroft . The Fifth Doctor served as the film ' s historical adviser . ( AUDIO : " Special Features " ) The novel " The Hand of Time " by Marnal was published . ( PROSE : " The Gallifrey Chronicles " ) A young woman was abducted by the Sisters of St Matilda . ( AUDIO : " The Cloisters of Terror " )