Flybe is recruiting via a few established routes (as in recommendations via known flight training organizations). About 10 people start each month until at least July or September (as well as recruitment for the holdpool). This is the only route for now, this might change later??
Bases vary and will be looked at when they make you an offer after passing the selection process. You could be lucky, but expect the Northerly bases like GLA, ABZ, BHD, EDI. You can bid every 6 months and at the moment it doesn't take that long to get where you want to be, however this can change and they can never make any promises. I would still accept any base they give you, especially if you just come straight out of flight school! You can never be too picky for your first job.