Harper's Fish & Chips in Wetwang, Yorkshire: http://harpersfishandchips.co.uk/gluten-free.html
Very nice fish and chips, reasonably priced and carefully served. We had take-away from there twice during the week that we stayed!
Rick Stein's in Falmouth, Cornwall also does very nice GF fish and chips but is a good bit more expensive and very pricey if you eat in! But very nice for a take-away treat if you're in the area.
The Orient, Chinese and Thai restaurant in Sandbach, Cheshire: http://www.orient-restaurant.co.uk/#about They are very helpful and will advise regarding allergens in their food. They do have a special GF menu if you ask too. We have eaten in and had take-away several times and it's always been really good.
The Beer Emporium, Sandbach - little beer shop/micro pub with a huge range of bottled beers. They often have some GF beers from UK or abroad available though not all the time. If you're a regular or ask Liam behind the bar he'll advise you and very likely order in GF beers specially for you (as he has for me!) There are also some ciders, wines and gins. Very friendly place but gets very busy and full at weekends.
Tavern Fayre, Hunger Hill, Bolton: http://tavernfayre.net/ They have a very wide-ranging menu which marks which items are gluten-free and still leaves a good range of meals to choose from. As I'm allergic to some other things (nuts, mustard, some fish) as well as being Coeliac I'm used to having only one or two options available when I eat out so it's lovely to visit a place where I'm spoilt for choice. On our last visit I had the Pot Roast of Beef Brisket and have to say that it was the most tender and tasty piece of beef that I've had for a very long time!
The Castle Hotel, Bishop's Castle, Shropshire: http://www.thecastlehotelbishopscastle.co.uk/ We stayed here for a little autumn break this year and last year. I warned them in advance of my allergies and being Coeliac and they printed and gave me my own special menu for dinner! Still with a wide range of choices available and they were very careful about what I could and couldn't eat. Despite all the things that I can't eat I was still able to have a full English cooked breakfast each morning too, including gluten-free sausage and black pudding and gluten free toast. Very friendly and helpful staff too.
Last but by no means least, for beer fans I thoroughly recommend Monty's Brewery in Montgomery in the Welsh Borders (very close to Bishops Castle). https://www.montysbrewery.co.uk/ They do two gluten-free beers: Masquerade, which is a nice smooth golden ale and Dark Secret which is a truly delicious stout. I really enjoyed some Dark Secret sitting by the fire in their visitor centre, The Cottage in Montgomery. Dark Secret is great for this time of year as it's a lovely rich beer that's full of flavour but also manages to be nice and smooth. Both beers are certified by Coeliac UK and each batch is tested (we spoke to the owner, who was very knowledgeable) and they are made with normal ingredients (barley and oats) then filtered so don't have the weird chemical taste that some GF beers have. I thoroughly recommend a visit there, especially if someone else is driving! I bought plenty to take away.
I hope you find these useful.