IATA codes United Kingdom 4

https://ukheliportslife.solsticebrief.com/posts/why-uk-heliports-matter-more-than-you-think

IATA codes for the United Kingdom, like LHR for London Heathrow or EDI for Edinburgh, are three-letter identifiers that streamline air travel and cargo logistics across England, Scotland, Wales, and Northern Ireland, each tied to a specific airport.