I am from South Wales(UK) as well.
When I had my bloods done properly as they lost my DNA samples first time so I needed to retake

, he then wrote to them around November/December last year. So I started on the waiting list for Charring cross around January I believe.
Its a Looooooooong wait. I have only just got my appointment.
I phoned charring cross hospital (I Wish we had a clinic here, 170 miles away sucks lol) myself to find out if I was on the waiting list to be honest. They only said about the average wait time as normal. Around 13 months these days they say, which nearly fits the bill since next month for my appointment will be 11 months.
The only letter I got prior to the appointment was a seminar talking about how they do things. That was around August.