RE: Is noise really the problem....?
I understand that model aviation is officially recognized as a sport in England. This means that model aviation has a right to sport facilities the same as the soccer mom. When talking with a local authority for permission to practice model aviation, best talk about the sport of model aviation. No reason they should support your hobby.
I's been said, somewhat in jest, that with urbanization, environmental concerns, etc. at sometime in the future electric control line will be the only permitted outside model aviation activity. there is beginning to be a fair amount of interest in electric in CL circles. As you all know, our Model Aviation Editor, Bob Hunt, made our Precision Aerobatic team for the next CL World Champs flying a glow airplane converted to electric.
World championships--sounds pretty sporty to me.