bushbolox
Not true, in my experience at LGW and LHR. Although you cannot use crew channels unless you have 'resident crew ID' ie based at said airport. BAA will let you go through normal pax security with 2 bags with a crew ID (Mine is Farnborough)
Some times security helpers in initial screening unaware of new crew rule, ask for supervisor.
Had to convince one supervisor that Fboro was not RAF only, initally acused me of trying to abuse system!