I have a scene in which a character needs to buy a sandwich at a cafe in London in the mid-to-late seventies, and I need to know how much that would cost. I am also wondering about the plausibility of such a cafe/neighbourhood existing. Ideally the neighbourhood the cafe is in is becoming more affluent/white collar despite times being hard for the country in general (I describe the clientele there as sort of sold out former hippies and banker types). I don't know how plausible that is or what is an appropriate neighbourhood in London to have as the setting, but have managed to avoid referring to a specific borough, and could probably cut down the above clientele description if I have to. However, I'm having a surprisingly hard time avoiding mentioning the price of a sandwich in dialogue. That specific bit of info would be much appreciated, as would any comments on the plausibility of this scenario in general - e.g., would a cafe that sold things like scones and other pastries and cream cheese sandwiches have been called a cafe at that time? Would it have had the tiered pricing with slightly cheaper prices for orders you take out and slightly more expensive prices for things you eat on the premises?
Thanks in advance, and mods, please let me know if I need to fix anything about this post.