A thing to do in London that is special, unusual and fun
My answer to A thing to do in London that is special, unusual and fun on Ask MetaFilter
London has some of the best cocktail bars in the world. I’m a big fan of this top 50 list, which is updated every year based on an international panel of bartenders. It looks like the American Bar at the Savoy is back at the top for London now—it’s been serving cocktails for over 100 years including keeping the American cocktail tradition alive during prohibition. Sure, it’s expensive but your budget should cover a couple of drinks each (which for me is absolutely enough for an evening). Or you could hit a couple of the bars on that list and have a drink at each one
Pro tip: the Savoy is within walking distance of most of London’s west end theaters, and in my experience if you head there after a show there’s normally no line to get seated at the bar. Great for after-show drinks.