Boris Johnson inherited a new feline colleague at the Foreign and Commonwealth Office as well as his new role in the Cabinet - and his cheeky streak appears to have rubbed off on the cat.

Palmerston took his Downing Street ambitions further by sneaking in to Theresa May's new residence while no one was looking.

The black-and-white cat, who was appointed Chief Mouser to the Foreign Office earlier this year after being adopted from Battersea Dogs and Cats Home, was unceremoniously evicted by police officers.