Fortnum and Mason’s elegant Diamond Jubilee Tea Salon has been serving tea since way back in 1926 – before that, this spacious dining room on the fourth floor of the Mayfair department store ...

Just remember to call it Fortnum's if you want to blend in ... You can slather the warm British cakes with an assortment of jellies and jams (most regulars opt for the wild blueberry) and lashings ...