My DS is going to be 18 soon, doesn't want a party but thinking of bringing a group of friends to London to do something and maybe stay over. Has anyone got any ideas of fun/cool/trendy activities (e.g. something like Flight club maybe)? What is a cool thing to do in London for 17/18 year olds at the moment? Which bars/restaurants are trendy at the moment for that age group? Something instagramable (is that a word? ;)) And any ideas of places to stay over night?