I'm a full time civil servant looking to put in a request to go part time. I currently work 37 hours a week over 5 days and want to do half time over 3 days, so 18.5 hours a week. If I work Mondays will I have to use holiday to cover half the day on each bank holiday? Would it therefore be better not to work Mondays? If I don't work Mondays would I still accrue half a bank holiday each time?