Hi Becca,
To be absolutely honest, no airline is particularly interested in these courses. If anything they simply offer you tips which many airlines consider to be bad habits. Now there is an academy somewhere in the midlands (sorry, I really cannot remember the name of it or at which airport it is based) which is in cahoots with Jet2 for cabin crew training which I believe is perhaps a better option however it is simply a way for Jet2 to get around making crew pay for their own training.
If you feel you are prepared enough then apply for the airlines and allow them to train you fully because after all it is under their training that you will learn what you need to know and not what you learn from some outfit like T & T.
I have worked for 3 airlines and each airline has provided very different training.
Hope this is useful to you!