HRO don't have a body shop in St Albans, they'd send you to Hangar Lane to get a quote. I asked for some work to be done recently and thought I'd ask them and they were more than double the next closest quote I had. When I was talking to them, while they would doubtless do a superb job, I felt like they were trying to justify needing the car for so long.
Bill McGrath's recommended a guy who has been suggested on here a couple of time - Shane, at Pretige. Not the cheapest, but I think he'll do the paintwork I want done when I get around to sorting it -
http://www.prestige-restoration.co.uk/ - I believe he mainly does resto's.
Finally, I've also read some good things about a company called Finished Line -
http://www.finishlineukltd.co.uk/ - speak to Chris Bray. I have had a quote for work here too and it was roughly 1/4 of the cost HRO quote for, by the sounds of it, more work.
I'm undecided who to use at the moment as, for me, the end result is more important than the price and until the work is done, I guess I wont be able to tell you who I think is best.