It is deemed the ultimate act of loyalty and servitude to the monarch — to stoop to lay a small kiss on their hand.
Thought to be an ancient act to show fidelity, it is one Rishi Sunak will carry out when he becomes the UK’s third prime minister of the year.
The newly elected Conservative Party leader will be King Charles III’s second PM in his six-week reign, following hot on the heels of the short-lived tenure of Liz Truss.