Philip Anderson

Philip Anderson (usually just 'Anderson') is a minor character on the BBC crime drama, Sherlock. He works at the Metropolitan Police's Forensic Services and hates Sherlock and refuses to work with him most of the time. He has had an affair with colleague Sergeant Sally Donovan which Sherlock revealed. much to their embarrassment. His full name was not reveiled until the first episode of season 3 'The Empty Hearse' when talking to Sherlock.

History
Anderson (Jonathan Aris) is a member of the Metropolitan Police's Forensic Services. From the series opening, it's clear that Anderson and Sherlock have history of mutual dislike with Sherlock repeatedly antagonising Anderson throughout the series and Anderson refusing to assist him at crime scenes.

In "A Study in Pink", Sherlock reveals, to both their embarrassment, Anderson and Sgt. Donovan's affair. In "The Reichenbach Fall", Anderson is the second person at The Yard to be deceived by Moriarty into thinking Sherlock may be involved in the recent theft and kidnapping.

Anderson's first name has yet to officially be revealed. In a joke tweet, series co-creator Mark Gatiss stated that his first name was Sylvia.

When Sherlock 'dies' Anderson feels responsible because he was the one that convinced everyone Sherlock was a fake. He lost his job convinced Sherlock was still alive and founded a club called 'The empty hearse' where people could discuss theorys how Sherlock faked his death and he would tell DI Greg Lestrade who would not be convinced.

Anderson finally found out he was still alive and filmed Sherlock telling him how he faked his death and was relieved he finally found out how he did it.