Using our 40% discounts (limited period only for students), I ordered a chicken burger with no bun. To coincide with us attending the premier of Water For Elephants (post on my other blog), I didn't want anything heavy so asked to not have bread.
GBK were incredibly accomodating and not only did they give me a chicken breast with no bun, they gave me extra salad with dressing and coleslaw on the side. Aside from the chicken leaking a tiny bit of juice, the meal was enjoyable. The dressing could have done with less vinegar too.