Looking for rental properties in London? Here are the four websites I use. The first two seem to duplicate each other, but occasionally one will offer a unique listing. Knight Frank has as many short lets as long lets (but the listings are clearly labeled).
Tip: sign up for email alerts to be notified when new properties come on the market in your price range and location.
p.s. Thanks to my friends F and J for telling me about these websites! I'd been stuck on Foxtons for way too long.
p.p.s. Am I missing any other great sites? Leave them below!