Unfortunatly it would not work to have a so called "level" playing field......
If the UK CAA (or JAA) stated minimum seat pitch then the airlines would have to put up the prices, as discussed eariler in this thread. Unfortunaty the FAA and other countries will not be bound by these measured heance will charge less and as already mentioned people want a cheap flight so all the business will go stateside.
What is needed is some sort of ICAO directive, but since i did Air Law several years ago iŽll leave that debate to someone else <img src="wink.gif" border="0">