Mentioned by Female Foodie
18 Best London Restaurants: A First Timer's Guide
"Afternoon tea is totally a thing in the UK, and London has the most options of any city. Traditional afternoon tea is really less about the tea (although it is served) and more about the food!. Clotted cream and scones, crustless sandwiches, and a myriad of bite-sized sweet pastries and cakes are served in most establishments."