London mayor Sadiq Khan has been knighted by King Charles at Buckingham Palace.The mayor was awarded the knighthood in the King’s honours for political and public service.Sir Sadiq, 54, has been the capital’s mayor since he was first elected in 2016.The Labour politician was re-elected as mayor of the capital in both 2021 and 2024, making him the first London mayor to win a third term.He shook hands with the King after being knighted on Tuesday morning.He joined rugby league star Sir Billy Boston, author Dame Jacqueline Wilson, and entrepreneur Sir Loyd Grossman among those to be honoured at the palace.