Billy Shipton

DCI Billy Shipton was a police detective working in London during the early 21st century.

Invstigations
Circa 2005 he began investigating the disappearance of multiple individuals near an abandoned estate called Wester Drumlins.

Metting Sally Sparrow
In 2007, this leads him into contact with Sally Sparrow, who is investigating the disappearance of her friend Kathy Nightingale from Wester Drumlins. Sally and Billy immediately hit it off, with Shipton giving her the nickname "Gorgeous Girl" and convincing her to give him her telephone number.

Life in 1969
A few minutes later, however, Shipton was touched by the Weeping Angels and sent back in time to 1969 where he is found by the Doctor and Martha Jones and learns his destiny is to send a message to Sally Sparrow when he eventually lives his life back to 2007.

Marriage and Easter Egg
In the ensuing decades, Shipton marries a woman named Sally, and eventually becomes involved in the video industry, including eventually DVDs. It is through his efforts that a videotaped message from the Doctor (which presumably he kept safe all these years) eventually ends up as an Easter Egg on 17 different DVD releases, sparking interest on the Internet.

Death
Finally, on the same day that he first met Sally, the now-elderly Shipton, destined to die in hospital the same day, contacts Sally and makes final contact with her. (DW: Blink)