Security
Mostly I fly through UK, Australia, Spanish, Asian airports.
UK & Australia (Sydney) seem to me to be usually chaotic,
long conga lines in the UK, nowhere to put anything, shoes, bags.
Nowhere to sit when putting shoes on.
Supervisors who seem to be of no value whatever.
My opinion is there should be the necessary number of properly trained security staff for the job to be done without long waiting lines.
If security has to be, then it should be done properly.
By the way, why do UK passport readers usually not work and other countries do ?