These guys are all right, TRI/TREs all tied up busy and at least another one leaving or very recently left. There are loads of guys going through CTC, infact i heard they are doing very little else but Easy at the moment, Easy pilots still converting from 737 to the Bus all ties up the trainers and the courses available. If you have been accepted from interview I would think they'll want you asap, when i joined they only had course dates for 3 months ahead so it may be that you are waiting on course allocations. Gatwick base is most likely, very short of pilots there, but they do try to send you where you want to go. Someone i know given LGW hasn't even started the course and got a transfer to another base he did want.
Good luck, it's hard work but good fun.