With all due respect FRatSTN (and I say this tongue-in-cheek) you sound too much like those managers who believe in their own business yuckspeak.
If the airport wants the revenue from all the extra flights it has accepted then it needs to use part of that revenue to improve the throughput of those additional passengers. My contention is that BHX has not done that. In any case, the problems pax face at BHX extends far beyond the issue of security lanes. By the way, it's not about the total number of lanes but how many are actually in operation at any one time. When it comes to arrivals, that can at times be almost as bad as JFK! The fact is that both terminals are now just too small and often bursting at the seams. Yet the airport quite happily continues to accept more and more flights/airlines to operate. Maybe they should just put that on hold until they can improve their infrastructure.