The age of consent is 16 in the UK.
You can't compare a schooldays romance with an adult and child situation and I think it's crass to do so. I admit there's a grey area but that's not what we're talking about. Those people weren't sixth formers wanting to shag their slightly younger crushes, they were grown men by quite some distance and knew what they were doing was wrong and were trying to gaslight others into enabling it. No one, including any judge, would view those two things as being in any way similar.
The thing in Dubai was in Dubai, where you have to be married to have sex and is therefore utterly unconnected. I don't know why it was mentioned.