All restaurants mentioned has stores across the UK in every town which are easy accessible.
1. Ask Italian Pizza
Menu - https://www.askitalian.co.uk/site/static/files/No_Gluten_Menu.pdf
Website- https://www.askitalian.co.uk/menus
2. Handmade Burger
Menu - http://handmadeburger.co.uk/menu/#
3. Pizza Hut
Menu- http://www.pizzahut.co.uk/restaurants/news/GlutenFree/
4. Bella Italia
Menu - http://www.bellaitalia.co.uk/menus/main-menu-1
5. Zizzi
Menu -https://www.zizzi.co.uk/data/menus/static_menus/1/pdf/Allergen-Information-June-2016.pdf
https://www.zizzi.co.uk/food
6. Nandos
Menu- https://www.nandos.co.uk/eat/menu
P.S ALTHOUGH THESE RESTAURANTS PROVIDE GLUTEN FREE MEALS ALWAYS REMEMBER TO TELL THE RESTAURANT MANAGER OR THE PERSON SERVING YOU THAT YOU HAVE CELIAC SO THAT THEY CAN MAKE CERTAIN YOUR FOOD IS AWAY FROM WHEAT AND/OR ANY OTHER GLUTEN CONTAINING INGREDIENTS. :)
Thanks the reading xx