Retreat Gastropub does not advertise their gluten free options but they have gluten free buns and a dedicated fryer for their amazing french fries. My go-to is the farmhouse burger because I cannot resist a fried egg.
They, also, have GF crusts for their flatbreads but last time I was there the wait staff told me that they are not celiac safe because they cook them on the same surface as gluten crusts.
As always, make sure to ask each time to ensure their fryer policies have not changed!