I've recently moved to London and brought some foreign currency (namely, US dollars) in cash with me. What would be the best place to exchange these for pounds?
I'll open a bank account soon, but I'm not sure if banks here provide good exchange rates (this is definitely not the case in my home country). In addition, I've heard many exchange offices charge very high commission, so I was wondering what's the "standard practice" here (e.g. is there a website that compares exchange rates that would allow me to find the best option)?