As a passenger I frequently fly from many UK aiports and don't experience any issues at security. I am fully aware of what the rules are, make sure I comply and get through security in a pleasant manner with no issues whatsover.
This suggests the crews that are having issues aren't complying with the rules in which case they can't complain about security picking up on this as they are only doing their job, or the security staff who work in crew areas are being deliberately difficult which I find hard to believe.
If this is the case people should be complaining to BAA or the relevant airport owner directly. I complained to BAA via their website about security queues when they were a problem last year and received a response so at the very least it might raise more awareness than complaining on here.
Even better ask to speak to the service manager once you've got through security at which point its too late for the security agents to be awkward to you in return
