While the royals occasionally let their guards down and share rare affectionate moments in public, on the whole they're professional and formal when out and about on official duties.
Prince Charles is rarely seen touching his wife Camilla, and the Cambridges have strict 'on-duty' behaviour.
But when Prince William tried a rare PDA during the couple's appearance on Mary Berry's A Berry Royal Christmas back in 2019 - it was well and truly shot down.
