As some people have said, manchester dosent need a new airport, the 'Terminal 4' issue at manchester has been talked about for ages, but just to build it for low cost carriers wouldn't be very cost effective.
I personal dont think there is a need for t4, maybe a revamp of t1 (ie the piers) would do ringway much better.
O and the reason Manchester is more expensive than lpl, just look at last week (ie week b4 christmas). I didnt hear of any flights diverting to lpl
