It's clear none of you have the remotest grasp of the economics which keep an airport running...
Suffice to say, without public subsidy, having GA paying peanuts at a big airport makes sense only to the GA pilot and his passengers. The situation in France is much better; I had a meeting recently at a regional airport with a nearly-2,000 m runway, ILS, NDB, DME, radar, etc. I flew in in a 5.7 tonne jet and paid less than €60 for landing and parking. Ate an excellent lunch in the restaurant in the terminal, drank a perfect coffee, fuelled at a reasonable price, and back home again...
The French government is behind aviation and therefore GA; the British one doesn't care a jot.
You voted for them!