The Queen would perhaps scoff at the idea of tackling her beloved city in just 1 day -- or even 2 or 3 days. But what does she know, really?
If that's all the time you have, we want to help you make the most of it by providing a ready-made itinerary that will allow you to have a complete, unforgettable trip. Of course, there is always a hidden London that awaits discovery as you seek out its secret treasures on your own, but that can wait for another day and another trip.
You can make the most of your short time by fortifying yourself with an old-fashioned English breakfast -- order "the works," perhaps skipping the blood pudding or sautéed kidneys if you're faint of heart. That way, if you sleep late (or have a "real tuck-in" as the Brits say), you might even skip lunch, so as not to lose precious daylight hours in your rushed schedule.