I know this subject has been covered repeatedly and I apologise! Want to take my parents for afternoon tea on a thursday afternoon. Hopefully, we will have visited the imperial war museum in the am and will be looking forward to a cuppa and something sweet! We would like to go somewhere, not too expensive! Doesn't have to be the traditional afternoon tea, any suggestions would be gratefully appreciated. Covent garden, piccadilly circus or oxford st areas preferably.