... to claim your money back for delayed Tube journeys. Any delay of 15 minutes or more than the advertised journey times entitles you to claim a refund from TfL.
So, while I'm sure I'm late to the party, I'd like to point you in the direction of the excellent Tube Tap - an iPhone application that makes it easy for you to reclaim some of your wasted money, if not your wasted time. Everyone seems to have iPhones these days. The app, I believe, costs £0.69 (I've seen £1.99 too, but Tube Tap's own site gives the lower figure), but a single successful claim will more than pay that back, making for great ROI (for any captains of industry reading this). It's also free for the 'Olympic period' - not sure if that includes the Paralympics, but you should get it now anyway!
I don't think it's available for smart phones on other operating systems, but if anyone knows of a similar product for the inestimably superior Android OS, I'd be very grateful if you could shoot me a line.