If direct entry you get paid from day one. Salary, duty pay, sector pay and flexi work (which you won't be qualified to do until line trained). Duty pay will be paid for all groundschool and any time away from home base, so if you do a type rating at CTC you will get duty pay 24hrs a day from leaving Manchester until return to Manchester. The same applies for any line training done away from Manchester.
Enjoy.
PP