Preternatural Research Bureau

The Preternatural Research Bureau — also known as P.R.O.B.E. or P.R.o.B.e. — was a British government organisation investigating paranormal activities. It was based in a single small office at Ashley House in London.

History
Liz Shaw was headhunted to join P.R.O.B.E. in the early 1990s, she suspected because of her work at the University of Cambridge. She accepted the job but found that the organisation was not what she had been promised, its base being a cramped office and the only other member being Louise Bayliss. It was also under-funded and, by 1994, at risk of losing funding entirely if it handed over a case to Scotland Yard. Although the stream of work was usually "comatose or dead", Liz remarked that she and Louise were doing the work of twenty. Liaison to the Ministry Patsy Haggard was sympathetic to P.R.O.B.E. and had a close relationship with Liz. (HOMEVID: The Zero Imperative)

Due to the rarity of P.R.O.B.E. being called out, Brian Rutherford did not see the merits of the organisation and, as his first act as minister, transferred Louise to another department whilst Liz was mourning her father. He threatened to shut down P.R.O.B.E. altogether but required Patsy's approval in order to do so, which she refused to give. After working on a case with Liz, D.I. Burke applied for a transfer to P.R.O.B.E. He was apparently unsuccessful. (HOMEVID: The Devil of Winterborne)

The organisation received as little support from the police force as it did from the department, as shown by Burke's initial scepticism, and also by the "practical joke" instigated by a policeman which sent Dr Shaw to investigate a poltergeist for two weeks. After Rutherford's kidnap by Alfred Emerson, and the revelation of his past dealings with Emerson's creator Julius Quilter, he quit his position and was ultimately replaced by Haggard herself. (HOMEVID: Unnatural Selection) While Haggard would certainly be more sympathetic to P.R.O.B.E. than her predecessor, Liz remained the only member of staff after Haggard's appointment.

Liz again became associated with UNIT and was at the Moonbase during the Eleventh Doctor's supposed funeral in 2010. (TV: Death of the Doctor) By 2015, Liz was still working at P.R.O.B.E., which was ordered to carry out a "government authorised execution". (HOMEVID: When to Die)

Crew
Louise Bayliss was the only member of P.R.O.B.E. when Liz Shaw joined in the 1990s having been asked whilst at Cambridge. (HOMEVID: The Zero Imperative) Louise was transferred to another department by Brian Rutherford in his plan to have P.R.O.B.E. shut down. D.I. Burke applied to join but apparently was unsuccessful. (HOMEVID: The Devil of Winterborne)

Behind the scenes

 * P.R.O.B.E. was introduced in a series of independent films produced by BBV Productions, which featured Liz Shaw from the Doctor Who series. Although not aimed for broadcast on television, this series of films nonetheless constituted the first ongoing spin-off set in the Doctor Who universe, predating the similarly themed Torchwood by more than a decade.
 * Liz Shaw smokes in the book Who Killed Kennedy, a deliberate tie-in to the contemporary P.R.O.B.E. stories.