I'm not normally a regulate-it person, but this airfare thing has become beyond ridiculous.
If the EU and UK want to cooperate on something useful, then standardize the air fare cateogories of charges and make the airlines have a web site that lists all of them clearly, to make up the bottom line.
Flying rarely within the Uk/EU, i recently had to book two flights to and from Ireland from the UK. Two, one-ways due to the destinations involved.
Trying to compare was so confusing, I gave up at one point and just decide to book the flight and airport with the time and location I wanted and didn't care what it cost! I decided it was worth the cost of a business class seat in order to avoid any questions about my suitcase, carry-on, and as a bonus would get lounge access, etc.
I came away from that fare checking, how big is my one suitcase, carryons allowed if the size of a lunch box, fuel surcharge, credit card booking fee, etc etc etc mess wondering if that's the goal. Make checking everything online so time consuming a busy person will just book and look away when we get the bill.
So they obsfucate on purpose.