Not really at its height yet...probably hit a little over 85,000 movements this calendar year (out of 120,000 permitted).
Passenger numbers will certainly be over 4m for the calendar year too (in fact they are over 4m for the last 12 months already).
The western pier (permitted) development is already underway - just as well with those passenger numbers!
I guess the big question for potential investors is whether the airport will be successful in its bid to have Boris's decision overturned and allow further expansion of terminal, apron & taxiway to the east.
Worth a punt?