LTNman
Luton may be running (flying?) ahead of the SERAS forecasts that you quote, but it still has some way to go to fulfil its ambitions as described in its response to that same document (published in November 2002). On page 23 it says:
"LLAOL estimate that, at the very least, LTN ought to be able to handle 480,000 ATMs on its two independent runways, resulting in 72mppa at an average load of 150 passengers per flight."