As @simonb pointed out, we have discussed this at length on Slack and it is an ongoing conversation, especially due to the exploding loo problem at our current office.
When we first picked the new office we did want to have unisex bathrooms and included this option in our tender documents for the fit out for this very reason. Ultimately, the cost of doing this and the time needed to complete this project meant that we were not able to do it for the new office when this was not going to be our forever home. This was disappointing, but as anyone who has been to our office knows, we need to move to somewhere new quickly as we have outgrown the current space.
As we were not able to install the superloos we will continue to have gendered bathrooms, but people are free to use the bathroom that they feel is the right one for them, or use the disabled bathrooms if they feel uncomfortable choosing a bathroom.
This is not a perfect solution and we know this, but in order to have safe spaces for women, enough bathrooms for everyone and to be able to move within a timescale that suits us this was the solution for now.
If you have thoughts/opinions on this we would be happy to hear them