My boyfriend and I will be in London in July for a few days and he wants to take a business associate/friend out for a lunch that will wow him. The gent fancies himself perhaps a bit of aristocracy (he isn't to my knowledge) and mentioned it was St.Slythins (sp?) Day that day, the patron saint of umbrellas I believe. We want to indulge his fanciful nature and take him someplace special for a Tuesday afternoon lunch or even late-afternoon high tea, if that is what I imagine it is. Any special Chowhound suggestions?