RVDT - I would suggest that your local knowledge of UK, it's terrain and the type of weather encountered by day (and oh yes by night) in the lumpier areas of the country might need some refreshing
So just how will you rescue someone in an R44 in cloud? I think a Sea King will take you safely to places where an R44 wouldn't even be a chocolate fireguard.
A 249' winch has pretty much always been enough for a lot of interesting rescues.
As I have said before - I don't question Mr Armstrong's flying skills or local knowledge but he is not a SAR pilot - he just happened to be in the right place with a helicopter - since he knew the area he didn't have to search and he didn't actually rescue anyone.