Are security staff at any UK airports either paid, promoted or rewarded in other ways (or not punished) based on any kind of metric which records how many passengers were processed through "their" security lane during their shift ?
Having had the good fortune to pass through the security lanes at LGW this afternoon where no liquids or laptops need to be removed from baggage, with pleasant and helpful security staff, I would respectfully suggests the metric concerning the number of passengers 'processed' should not assessed in terms of 'SLF passing through', because not only will that vary with the time of day, but also on the quality and specifics of the equipment assessing the possessions of the said-SLF.