Louie Patisserie (aka 'The Hungarian Tea Shop')

Location: 32 Heath Street, Hampstead, London NW3

Aaaaaaaah! This is one of those olde-worlde-type tea shops (and yet surprisingly not tourist kitschy) where they bring out the big tray of cakes and then you choose your cake and they take the tray away and the tea is served in pure silver teapots (okay, may be exaggerating a bit there).