Right, I’ll post this but restating that I am not an expert.
There is a grey area when it comes to pubs running poker nights. You need to be very careful about what the game is, and is it in fact a game of 100%skill. Telephone quizzes are another grey area where the questions are so easy it is in fact a “lottery”.
Don’t forget that pub quiz nights are fine, and you may want to speak to a publican who runs these as they should, in theory, know the law.