Quite right
easyb - a box of plaggy bags doesn't cost a great deal compared to the amount Joe Bloggs spends at the airport!! Just a gesture thats all we want- (if not- instead of charging - just steal a load from Tesco's or Sainsbury's - there free there!)
On a positive note - security staff also always more personable and efficent compared those down the M42 - not such a chore. Keep it up.