I guess, after what I read, I would opt for taking two, 1 hour long lessons per day. That way I could finish all required practical sessions in 6 months roughly, which is fine by me.
@BroomstickPilot: thanks for your pointers about the airfields. Actuallu, luton/cranfield is not that far, neither is Brighton - both roughly 1.5 hour door to door. Considering this, which probably expands the range of possible aeroclubs, any new proposals?