That's exactly my point and the reason I don't bother flying this route. This thing take longer to get than a Schengen
I unfortunately need a visa. Applied last Monday. Flying to Heathrow as that’s the only direct flight to UK. Was not prepared to do a layover with an infant.
Will see if they even approve the visa. My 5th one now. But we always flew into gatwick.
When we flew back from Vegas in 2019 - we were going through London and did not need a visa normally. But. They were striking during that time and they had to issue me a temp visa to go to a local hotel to catch another flight the following day.