Chip & sign vs. chip & pin in London
I won't be heading across the pond until next year, but want to see if I need to start calling the credit card companies to get new ones issued. I have read somewhere that most merchants in London use chip & pin. Is chip & sign still an option at most places? All of my cards have chips, but none are pin-enabled. Also, is it a safe assumption that smaller "Mom & Pop" stores are usually cash only? TIA.
LAX