I have been watching Pakistani food shows for the last few days, and I can easily say nothing beats the food from Peshawar and Mardan! The amount of BBQ items, Pulaos, the so many different types of breads, and most of all their Cleanliness compared to other cities is what is really attractive. Would love to go there on my next trip
but I would go there for peshwari food in general 
True the variety is pretty decent but man always run out of places to go and forget little gems like Khyber, have you been to the Nawabs in brum? same here, not a fan of buffets either but the one in Manchester is probably the best I've been to