I have watched for a while and timed landings at 40 second intervals,
At an average Vref of 135 Kts that would be 1,5 NM long. separation on APP .
Question to EGLL APP ATCOS here : Do you really do this in LHR regularly ? If yes, how do you cope with wake turbulence separations and to guarantee high speed exits ? ? or is this just occasionally with single types , home based airline(s) and full CAVOK , etc..
Just curious ( and very impressed if true !)