Re: UK Coastguard SAR - Bristow out??
ST, yes I think we can safely say that the MCGA will want to go rather further than the Isle of Wight! I'm no authority on the workings of UK SAR, but at the very least I'd have thought they would cover all of the UK territorial waters. The next base going East is RAF Wattisham, so that gives some clue as to how far SE the Lee on Solent machine needs to cover.
Out of interest, what's the deal with the Channel Islands; is that Portland's coverage or the French?