Take note that quite some people who don't life in the UK, will have their event at 21:00 till 22:00 - 22:30, a lot of people still have to go to school. So they go to bed earlier.
20:00 is fine. It's sad for the people who eat at 19:00 in the UK, but a I could just be right if I say that the majority doesn't have any problem with the current times, and have it rather then an hour later. (From the other time-zone).
If it's really such a problem then just eat earlier?