If you want to experience a lovely Ice Cream Parlour go to Fortnum & Mason.
Took my daughter on Friday and had wonderful time, terrific food and great fun for children as they can create their own Ice Cream Sundae. Service as you would expect is 1st Class. Had delicious Coronation chicken on Toast and Asparagus & Goats Cheese tart before moving on to dessert. Lovely little touches such a mini ice cream cone with tea and coffee.