Trade Union Companions

Question: In a disciplinary, if an employee wants to be accompanied by a representative from a trade union that is not recognised by the business, can you stope them from coming?

In short the answer is NO.

The recognition of a trade union is about collective bargaining, not disciplinaries and grievances.  You don’t need to recognise the trade union for the representative to have the right to attend as long as they are reasonably certified in writing as having the experience of or having received training in acting as a companion at disciplinary or grievance hearings.