IO540 - Its at hangar 10 - Anglian Flight Training, but I am obliged to point out that other flying organisations exist in East Anglia.
Skyhawk - if Flash went through the departure lounge he would have been asked to pay, if he refused to pay he would have still got through, if he did pay he wont get his money back, if he was departing via security as an a private pilot he wouldnt have to pay, simple as that.
Lotman1000 - a lot of hot air which is hardly applicable to any pilot or their passengers on this forum, only to passengers using the departure lounge.
Your advice would be better suited to the anti airport lobby web site, most of whose subscribers hold similarly ridiculous opinions and conspiracy theories that it's a secret tax evasion exercise.