Hi,
Kalin_London does a lot of work with transgender models. He is based in Cardiff, and does shoots in his house which features a Victorian cellar that has been converted into an impressive dungeon. I follow him on Fetlife, and I think he posted recently that he will be in London tomorrow. You can see examples of his work on Fetlife and Manyvids. I don't know him, but I had it in mind to contact him for a shoot when I get a chance.
Regards