The dressage centre I went to has closed but I think that Talland Equitation may still offer training, though Covid could have changed things.
The Talland School of Equitation is one of the world-renowned BHS horse riding schools and ABRS approved equestrian centres, offering Dressage, Show Jumping, Cross Country and Side Saddle lessons to everyone. *** OPEN UNAFFLILIATED DRESSAGE *** MONDAY 31st AUGUST Click here for schedule – ALL...
www.talland.net
As far as I can remember most dressage teaching centres in UK do not offer accommodation. But some of them can recommend near by possibilities. You would need to ask their advice and then have to find a B&B or pub or hotel.
You need to understand that the dressage training at Talland is not the only version in the UK. I seem to recall there is a centre with Spanish horses in Anglesy.
You will find lists of approved coaches and schools on the BHS website or search the H&H forum web site.
I do not own a horse and most advanced dressage coaching in the UK comes from trainers who train horse owners.