12a) Large isle prepared for immune system disorders (9) ??l???i?s 2d) Proposals for U-boat assignments (11) ????e?e???r 3d) Reserve goalie is a shop proprietor (11) ????e?e???r 24d) Choose addresses...
Each answer is a commonly used phrase in which the two main words begin with P. this one has proved a real poser:
12=off road driving - any ideas anyone?...