I wouldn't do an Integrated Course in your situation. That £40-50k you have will cover you nicely for modular training and leave you with decent options should you be required to fund a Type Rating.
If you wish to significantly improve your chances of landing a job with BA or BMI then an Integrated Course is the way, but trust me it'll cost you far more than the quoted £60k.
Also, have you tried the CTC Wings Cadet scheme?
FYI, I started flying at 18, failed BA, Britannia, Atlantic Airways, FlyBE, Oxford/XL airways and CTC Wings Cadet. I think I hold the record for knockbacks
Pass rates for these schemes is something like 1-2% and I doubt Oxford put forward any 30-somethings forward for NetJets so don't in anyway be disheartened! I consider my failings to be blessings (long story).
Now doing modular at the age of 25.
Good luck!