Hi Chris,
Er... forgive me if I am wrong but an airline is usually more interested in your flying experience and licence, ie they would like to see someone with a JAA CPL/IR MCC and ATPL Subjects passed (ie a "frozen ATPL"), would they not?
Other than that just obtain decent grades in your GCSE's, A Levels and a Degree if you go on to do it. An airline would prefer you to have three A's in Drama, English and Art rather than D's in Maths, Physics etc...
Best wishes,
Charlie Zulu.