They don't really have a gluten free menu but a menu that indicates what to avoid and ask to not be included in your meal. If you are looking for a steak and a baked potato you will probably be happy.
I really like the Victoria steak and they have enough GF choices to satisfy me. Even brownies for dessert if I want!
expensive and nothing realy for kids unless they want a plain dry steak or chicken breast.
Ask for a gluten free menu and order as an allergy. They have a training team that has trained the staff to handle all gluten free items as allergies. They wash hands, change gloves, use clean equipment and utensils etc.
Your food usually comes out either by your specific waiter or a kitchen staff as soon as it is done to minimise risk.
The food is obviously a little limited. But they have brownie for dessert!