when i was there last (2 years ago) i had the buckingham palace with chamomile tea - very nice, and filling!
the sandwiches were good, but i thought the bread were a bit dry (not stale, just dry) - the scones were very good, especially the devonshire cream - i could eat a bowl of that alone! - chose the pastries (a swan with cream, and some pale pink thing, don't remember what exactly) - both really good
i picked chamomile because that day, i wasn't feeling very adventureous (had a sore throat, just wanted something familiar) - noticed several women getting tea in their press pots that were bright red (maybe the vanilla rooibos?) - next time, i'd get that, just for the color alone!
i've done this tea several times (also dragging alone both my DS and DH, neither of which appreciated the fine art of afternoon tea....) - have always enjoyed the beauty of that room, the quietness and the dainty foods!