You can do all the training you need at Bournemouth, it is extremely busy on occasions and you will find you are mixed up amongst all aircraft types- but isn't that a good thing?
Bournemouth is not 24 hour - it operates from 0630 local - 2130 local ,7 days a week. Any flights ourside those times are contracted to do mail or are late arriving passenger flights. Instrument training flights generally operate from 0800 (ish) to 2000(ish). Relevant schools are listed in other posts, just call them and see!