I just had a look at LASORS....
you can start your CPL training with 150 hours TT, but for licence issue, you must have 100 hours P1. It's reduced to 70 hours for those who have done integrated training.
It's best just to read through LASORS, loads of info there, twill put you on the right track!
http://www.caa.co.uk/docs/33/LASORS.PDF