Keir Starmer has resigned as UK prime minister, making him the sixth PM to depart since Larry the cat arrived at 10 Downing Street in 2011. The post uses gentle humor to highlight the remarkable political instability in British government over the past 15 years — six prime ministers in one decade, yet one famous cat has remained a constant fixture throughout. Larry is now regarded as the most durable occupant of the residence and a symbol of continuity amid recurring leadership turmoil.