Rumour has it that part of the sale of Bond Helicopters to CHC included a no-competition clause between CHC/Skotia and BAS, namely that one would not compete onshore if the other did not enter the offshore market. I may be seeing this move a bit cynically but it looks to me that CHC are moving out of onshore operations in the UK to avoid another operator entering the offshore market.
Probably not a bad idea looking at the way they have already started to treat employees in the new company. If BAS were to enter there would be a few migrations and Skotia would be left with too few pilots to fulfil their contracts.