Larry (cat)

See also previous Chief Mousers to the Cabinet Office, going back approx 100 years:

https://en.wikipedia.org/wiki/Sybil_(cat)

https://en.wikipedia.org/wiki/Humphrey_(cat)

https://en.wikipedia.org/wiki/Wilberforce_(cat)

https://en.wikipedia.org/wiki/Peta_(cat)

https://en.wikipedia.org/wiki/Peter_III_(cat)

https://en.wikipedia.org/wiki/Peter_II_(cat)

https://en.wikipedia.org/wiki/Nelson_(cat)

https://en.wikipedia.org/wiki/Munich_Mouser

https://en.wikipedia.org/wiki/Peter_(chief_mouser)

https://en.wikipedia.org/wiki/Rufus_of_England

Aww :)

The "rival" cat at the Foreign & Commonwealth house down the street also has his own wiki lol: https://en.wikipedia.org/wiki/Palmerston_(cat)