no chance mate, all loans are paid after tax and in proportion to your earnings.
See my previous post for approximate money in your pocket with a £24k cadet salary, its around £1400p/m (on a good day) before youve even spent so much as a penny.
After tax, NI, and student loan (excluding pension and any CTC loans) your take home will be:
£27k = £1550
£30k = £1700
£33k = £1850
£36k = £2000