Redline, I stand corrected mate, you are right. However I have seen Approved Mechanics who are not B1s certify task cards in base maintenance.. This wasn't the worlds favourite airline either and a little birdie has told me the other company got into a lot of trouble with theirs..
I'm sure the current regulation change document does have passages of PART 145 where the terminology of B1 and B2 has been removed from Support Staffs, unless my eyesight is going wrong!