Humphrey was found as a stray by a
Cabinet Office civil servant and named in honour of
Humphrey Appleby, the archetypal civil servant of
Yes Minister and
Yes, Prime Minister. After the death of the previous mouser,
Wilberforce in 1988, the Cabinet Office and Number 10 were in need of a replacement and so Humphrey began his work. At a cost of about £100 a year (paid for from the Cabinet Office's budget), most of which went towards food, Humphrey was said to be of considerably better value than the Cabinet's professional pest controller, who charged £4,000 a year and is reported to have never caught a mouse. and the nearby
St. James's Park ensure a continuous vermin problem. By the time of his retirement, Humphrey had risen to the position of
Chief Mouser to the Cabinet Office. Humphrey was accused on 7 June 1994 of having killed four
robin chicks which were nesting in a window box outside the office of John Major, then
Prime Minister. However, Major exonerated him the next day, declaring, "I am afraid Humphrey has been falsely accused." In September 1994, Humphrey was found in
St James's Park and was blamed for having "savaged" a duck there, earlier in the year. In June 1995, Humphrey went missing. Downing Street did not disclose the fact until it was mentioned to Sheila Gunn, a journalist on
The Times, after Gunn told a member of staff that her own cat had died. Gunn's story was mentioned on the front page. The publicity led to his rediscovery in the nearby
Royal Army Medical College, where he had been taken in as a presumed stray and renamed PC, short for "patrol cat". Upon his return, Humphrey issued a statement through the civil service: "I have had a wonderful holiday at the Royal Army Medical College, but it is nice to be back and I am looking forward to the new parliamentary session." Within a week of
Tony Blair moving to 10 Downing Street after the
May 1997 general election, there were press reports of a rift between Humphrey and
Cherie Blair, the new Prime Minister's wife. Cherie Blair was reported either to be
allergic to cats or to believe them to be unhygienic. Sheila Gunn, who had gone on to be John Major's press advisor, later admitted that she was the source of these reports, which her obituary says were based "on a hunch for which she had no evidence". The photo was used on the cover of
Private Eye with Humphrey stating "I am going to hit the mouse running" a paraphrase of a
New Labourism. In November 1997, Humphrey's primary carer, Jonathan Rees, who worked in the
Prime Minister's Policy Unit, wrote a memo stating that the cat should retire to a "stable home environment where he can be looked after properly". ==Retirement==