all the money we chuck at the Euro Countries who cant be arsed to pay proper taxes etc etc ...yes Greece / Spain / France / Turkey that means you would mean no more cash strapped NHS , money for infrastructure ( roads etc ) and if we finally elect a leader with balls , take control of our borders and build our armed forces back up, yes I know Turkey hasn't technically joined yet ( god help us when they get free movement ).
Mind you I also think we should stop all aid to Pakistan / India / China / Brazil / hell all African Countries there corruption / space program's and growth make a mockery of our largess