HM - The union have participated in the process but have to keep the details secret both by duty to their member, and likely a confidentiality agreement with BA.
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Pls read Litebulbs (a Unite rep) post above regarding unions releasing this kind of information. I don't think BASSA could maintain a confidentiality agreement if it did them a favour not to anyway.
In fact BASSA have many times during this dispute released confidential (but selective) details about disciplinaries that were not even concluded! They would be shouting these cases from the rooftops.