Although 2-3 minutes isn't alot, with BIH every minute in the air costs money.
I do know from an undisclosed source that they aren't making money on the route from PZE anymore, so perhaps a "little" further up the country might make a difference.
I worked out they make £2400 (ish) per flight from Penzance, each trip costs £1000 to run the chopper. Be nice to see some S-92's, or perhaps something smaller like the AW139?