DH doesn’t compel anyone to use any pronoun.
Policy DH helped to write:
Employers have a moral as well as a legal duty to stamp out discrimination and harassment in all its forms. The NASUWT plays an important role in supporting trans members and offering advice and experience to their colleagues and employers.
Which includes:
Pronouns and titles. The trans person should be referred to by their preferred pronouns (e.g. he, she, they, zie) and title (e.g. Mr, Miss, Mrs, Ms, Mx) and the employer has a duty to ensure that this is understood by everyone. Mistakes are to be expected in the weeks after transition but, when this happens, a quick apology and correction should suffice.
That’s sure as hell compulsion to me. DH may not personally compel others, but DH’s guidance which impacts thousands of teachers, certainly does.
Didn’t notice anything in the guidance on how to support properly the wives (most always) or children of people who transition. Like other posters, I would much rather hear from Dr Stephanie Hayton.