Speedbird,
Not too sure where or if airlines send there tps for training but I went to ETPS in 06 with 6 GCE's and a 2nd Mates ticket from the merchant navy. As one of the other posters pointed out your flying experience in roles, and variety as well as hours will count more than academic qualifications. (Then again it did mean I hit some of the subjects with a pretty steep learning curve!)
Whatever you decide good luck.
Ian