What I like there is the simplicity. Fresh ingredients, tasty burgers, sweet potatoes fries to die for, simple decoration, cheap prices, no service added because you order and you pay for it directly at the counter and no queue during hours.
Go with your friends or your family. You will find a GBK everywhere in London.
15 Frith St
London W1D 4RF
Tottenham Court Road
Other locations: Waterloo, Marylebone, Westfield London
+44 (0)20 7494 9533
Price : less than £20 pp (drinks included)