Abdulbandul and Northenstar. Bristow did take on the Engineers in Sumburgh and Stornoway when they took the contract from CHC as CHC did when they took the contract from Bristow years before. As for the rest of the crews they took some but I don't know if it was all. I beleave that the same was true for Lee on Sea but don't know for sure.
All the other bases were new bases so not covered by TUPE.
As for the T's and C's I don't know, if they did change I haven't heard any moans from the people I am still in touch with.
Just t put the record right.