And no liquid restrictions. They have special trays for the x-ray machines so you can bring in your coffee without spilling. And you can come back from France with a box of 12 wine bottles no problem.
The UK ditched airport liquid restrictions in December 2022 (although airports have until June 2024 to implement the change). Specifically, the 100ml rule is now a 2 litre rule.
Generally speaking you don’t have to remove shoes at UK airports, either.
It's also just quicker turning up 1h30 early for a Eurostar is very early, turning up 1h30 early for a plane can be a bit tight.