Security
BHX security to get airside are only there to check boarding cards and photograph pax on domestic routes. Reason for them apllying a small sticker on boarding cards with a barcode that corresponds with the photograph. Obviously they also carry out full screening of pax as well but this has not been called into question in said article and has never been before.
The handling agents are responsible for checking documents for flight such as tickets and passports. They carry this out at check-in and at the gate, I beleive also on the PIA that an outside security company also do screening at the gate and possible this is the third faliure that the article refers to.
Regards Barry