Could you please recommend any restaurants (preferably 1st tube zone) with prices of at most 15 pounds per meal? It'd be the best if they are somehow unusual but I don't count on it too much since I saw how highly the unusuality in London is priced (10 pounds for a burger at Sticky Fingers? Come on..). I know that my budget isn't splurge but I don't think it's low, either. However, I couldn't find anything either interesting or with just tasty food. Could you recommend something?