Want to avoid the sweltering Central line today? You're in luck. It's Cycle to Work Day, and TfL is getting involved by offering Londoners free rides on Boris Bikes (or are they Sadiq Cycles now?) all day long. All you have to do is use the code 'CTWD2016' and you'll get a free 30-minute ride today. You can use the code as many times as you like (or until your legs seize up), so ditch the tube and hop on your bike!