An update: I sent the following reply a couple of weeks ago -
*Dear Rachel,
Thank you for your reply to my email of complaint about the removal of the main female toilets at York Theatre Royal.
I am somewhat taken aback by your suggestion that women who feel uncomfortable sharing toilet facilities with men, should use the disabled toilet instead. I assume an Equality Impact Assessment was also carried out before this surprising policy change was made, as this will no doubt have a significant impact on your disabled customers. I wonder what suggestions you will make to them when they find the accessible toilet in constant use by women who do not feel safe or comfortable sharing toilets with men. You say this change was made in order to "be inclusive of everyone in our community", and yet women and disabled people - who you presumably also count as valuable members of your community - are being demonstrably disadvantaged by these changes.
It is, in fact, unlawful for men and women to share toilet facilities where cubicles do not have full floor-to-ceiling partitions and doors. This is because, as I pointed out (a point to which you did not respond), women are at increased risk of harassment and assault in mixed-sex facilities. Toilet cubicles like yours provide opportunities for voyerism and upskirting, as well as being completely lacking in adequate privacy. The British Toilet Association and the Health and Safety Executive will be able to offer advice on what constitutes safe and legal toilet facilities.
If men are unable to toilet their children adequately in the men's toilets, this is sad and needs addressing - by improving the men's toilets. If transgender customers do not feel safe or comfortable using single sex toilet facilities, this needs addressing by creating more self-contained, entirely private cubicles, not by removing facilities from women, or by illegally inviting men into the women's toilets, thus putting women at risk. Furthermore, it is totally unacceptable to make disabled facilities available to anyone not happy with the current unsafe, undignified and illegal arrangements*
I've just had an email back referring me onto the head of operations who is apparently going to respond in full to the points I've raised. I'll let you know what he has to say ..