Gonzo
At Heathrow, 'vacating' may not be used in the clearance,but it certainly is at Gatwick ( don't know about Stansted and Manch ). We use it because when you say 'after the landing' and the subject aircraft is already approaching the RET it can lead to unwanted confusion - if it's already landed how can it be landing? ( 'after the landed' is also available, but just sounds too much like 'after the landing'! ). All MATS part 2 procedures.
