There's a pub on Coleman Road in Peckham that is pretty scary. Was visiting a mate nearby and they made it very clear we were not welcome. Two nice females that we were, too! I've also felt decidedly unwelcome in Man of Kent. Went to a few pubs in East End with mates - around the Bow flyover where the nature reserve is, and smoking was still going on, and being outsiders we were treated with great suspicion!