Larry Marks 15 Years as Downing Street’s Chief Mouser

Larry the cat has reached a rare milestone in British political life, marking 15 years as the resident chief mouser at 10 Downing Street. The 19 year old tabby has served under six prime ministers, becoming one of the most familiar and enduring figures associated with the famous black door in central London.

Officially titled Chief Mouser to the Cabinet Office, Larry was adopted from Battersea Dogs and Cats Home in February 2011 by then prime minister David Cameron and his wife Samantha. At the time, Cameron said he was delighted to welcome Larry to Downing Street and expressed confidence that the new arrival would charm visitors while keeping rodents under control.

Since then, Larry has remained a constant presence through successive governments and periods of political upheaval. From coalition negotiations and general elections to leadership contests and major national events, the Downing Street cat has quietly observed the comings and goings of British politics.

The role of chief mouser has a long history. Cats have been employed in government buildings for centuries to manage rodent populations, with records of feline residents dating back to the reign of King Henry VIII. In modern times, the position became more formally recognised, with Humphrey serving as chief mouser from 1989 until his retirement in 1997. Larry was the first cat to take up the role after Humphrey’s departure.

Although his job description includes controlling mice within Number 10, public debate has occasionally arisen over his hunting record. Reports suggest Larry made his first confirmed catch in April 2011, shortly after moving in. Despite occasional criticism, he has largely won over the public with his calm demeanour and frequent appearances outside the prime minister’s residence.

Larry is often seen sitting on the doorstep of Number 10, lounging on windowsills or inspecting passing journalists and photographers. His relaxed posture and independence have made him a popular figure on social media, where unofficial accounts track his daily movements and interactions.

Now 19 years old, Larry is considered elderly by feline standards, equivalent to more than 90 in human years. Yet he continues to patrol his territory and maintain his position as Britain’s most consistent Downing Street resident. His tenure has outlasted multiple administrations and political controversies, giving him a unique place in recent British history.

For many Londoners and visitors alike, Larry has become part of the fabric of Downing Street, as recognisable as the black door and the iconic number 10 plaque. In a political landscape often defined by rapid change, his steady presence offers a small but welcome sense of continuity.