Thanks for the replies so far. I think I'm going to have to get a job which allows me to work shifts or more flexible hours... I get 25 days holiday plus public which isn't bad, but I'm not sure if it's going to be enough. I'm also not sure what my employer would think about unpaid leave - they know I'm learning to fly but I've told them its a hobby just now, I can't tell them it's a possible career so will have to make up some excuses. I guess I could say I want to be a part time instructor (which I've not ruled out) which is a good enough reason to need all the time off...