SO14 Royalty Protection Group - Elite UK Forces
https://www.eliteukforces.info police SO14-royalty-protection:
Armed Personal Protection Officers (PPO) protect select members of the Royal Family, both at home and abroad. SO14 bodyguards operate in plainclothes and are routinely armed with 9mm Glock 17 pistols. They discretly carry their pistol, radio and a first aid kit on their person.
Didn’t know about them - thanks