The White Horse in Ramsden Heath nr Billericay, Essex is another restaurant find with a pretty decent gluten free menu.
It's basically just a selection off the main menu of things we can eat so often things are missing but it definately helps out! And the food is yummy. Shame about the lack of gluten free desserts though!
Another plus point - they also do gluten free gravy so you can enjoy a roast, although serving gluten free yorkshire puddings would make it my fave restaurant ever (yet to find one of these!!)