KK
There is a scheme under JAR-FCL whereby the holder of a PPL can have hours credited towards a full time integrated course such as that offered by BAE. This is up to a maximum of 40 hours (although I think you can get the night credit as well).
BAE will not give you a discount at the outset of the course, as there is no way of knowing if you will complete the course in the minimum time. If for example you were to fail a few tests or require the odd extra hour here and there you would then be presented with a bill at the end.
I have just completed the course with BAE, and was credited with upto 40 hours. As it happened I needed an extra couple of hours twin time but saved on the single. This meant I left the course with a fairly nice cheque.
If you want to know more specific details about BAE then please email me.