Mmmm same position although I don't have an IT degree, economics instead.
Well sponsorship on hold in 99% of the case. Hopefully us 23 year olds might get the odd crack at one before we are considered over the sponsorship hill.
Otherwise you are just going to have to pay for it. As you don't want to pay 50k in one go, you will probably have to do the modular route and pay for flying and exams whilst in full time work.
Only way I think you can work round it.
Could be wrong!! I know I am in the identical position.
Sagey