They like to keep you on file and will call you for interview when required.
You will recieve a call and be given a selection of dates on which they are interviewing, and invited to attend whichever is convenient. I see this as a professional way of doing things and fail to understand the dissatisfaction of a recent poster.
If successful, you are given the sim profile with power, pitch, speeds etc. The actual route is given on the day, but speaking to those who have attended recently, it seems to be a SID from MAN or BHX followed by a hold then procedural or vectored ILS