This is the link to the members of BAEDT - hopefully there will be one near you, they do travel a little way (mine came from the next county) and it's well worth paying for a properly qualified EDT imo....
I can thoroughly recommend Peter Hancock. I used him for a couple of years and he was excellent, a real horseman too, he actually likes his patients. I will see if I can find a number for him.
I have used Anthony Jones for the last 12 years and cant fault him, he's very good with the horses and they all relax in his company. You will prob find his number in the Free-Ads, if not, PM me. Justine Pugh is apparently very good too, but I havnt had the pleasure