Looking at the Flight Times page on the link that Coconutty posted, it must be a super-duper S76 they use/are getting.
London - Aberdeen ( approx 500 miles) in 105 minutes = around 286 mph
London - Edinburgh (approx 400 miles) in 85 minutes = around 282 mph
London - Dumfries ( approx 340 miles) in 70 minutes = around 291 mph
and
London - Kendal ( approx 260 miles ) sits right on their 60 minute range ring.
To be fair, their own page on the aircraft gives a cruising speed of 180 mph.
Crab, I mentioned your point about the current provision to one of the collectors, and in response, he implied that in the future, the military would not be in involved in SAR and that the new commercial organisation would not be equipped for the kind of transfers the TCAA were aiming to carry out.
I gave up at that point and went to find the store manager.