IIRC BA offered Unite a voluntary recognition agreement for MF early on in the proceedings, which Unite turned down. Therefore what happens in MF is of no interest to Unite unless BA offers again, or Unite decides to get 50% plus of that group and go for statutory recognition. However, in the meantime, some other organisation could form/represent MF crews and request recognition from BA voluntarily (or VV), or statutorily.
nb Notlangley, I think SC means that the arrangement between BA and Unite(including its differnt branches BASSA and CC89) is voluntarily for TU Recognition purposes -ie it has not been subject to a Statutory Recognition Request. What the constitutional arrangements are for the relationship of BASSA and CC89 within Unite seem to be shrouded in mystery.