TCAS fan, the tone of your post seems very narrow minded and selfish. Surely you weren't born and trained wholly inside CAS?
A pilot operating close to CAS calling for a service can be mutually beneficial to the controller and to pilots inside that airspace. Ask Doncaster, Cranfield or Coventry controllers how they feel about a mere 2.5 nm ATZ, I know they are often grateful to know who is out there, to everyone's mutual benefit and safety.
We are all in this aviation thing together. We should learn to give and take a little. The LARS system has some big gaps in it, not a pilot's fault. London Info is not the best agency to give a FIS in many circumstances. Nothing against that unit; they do a fine job, but info such as local traffic and local QNH are far more relevant when operating near or under CAS.
Some GA pilots certainly do need to sharpen up when passing details, no doubt about it. Especially the ones who seem to have learned via Dad's Army to speak only with a plum in each cheek and say "Over" after every transmission....then not listen out
