I went to Tayyabs last night. It is an amazing Pakistani restaurant in Whitechapel. I recommend the lamb chops, naan breads, and Karahi Chicken Sag. I also had a delicious mango lassi which really cut through the spiciness of the food. Best of all, two of us ate for about £30!
Be warned though, this food is spicy, and they do not cater for people whose palates prefer something a little milder!