I did mine a few years ago (15 for class 2, 12 for class 1) back near where I’m originally from - Featherstone near Wolverhampton.
A friend of mine is about to do their training with COTTS in Swansea - I’ll ask how he finds them and let you know. I used them for a CPC module and they were extortionate but I was in a bit of a rush and out of options.
The only other I ever really hear about are ATTS in Brynmenyn - quite a few newer drivers I either work with or know seem to use them. Never heard anything bad about them but haven’t a clue about costs etc.