The civilised inspectors (that almost certainly excludes the jobsworth from the UK) say "I've just got a few things to check. I won't be delaying your flight." Your response is "No problem. What would you like to drink and would you like a small meal or sandwich?" If a less civilised inspector is onboard or if this is met with official belligerence, I'll do the same. So far I've only evicted one inspector. An idiot in Belgium. Didn't hear a thing afterwards despite the squealing.