Hi hun, I've been working with a great therapist for more than two years now, has worked with several Trans* clients and is based in Hertfordshire if that's of any use (PM me for her details). Otherwise there is Lynn Allars who does Skype sessions. PinkTherapy have a register of UK LGBT friendly therapists, many will have experience with gender identity. The GenderGP service also have a couple of therapists attached who you could contact.
The UK is not like the US, no therapist here is going to 'diagnose' you as they are not gatekeepers, but they can help you open up and talk through your thoughts and feelings. Good luck. X
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