@noddymaccy: Ever wondered if a train has “flats”? How can you tell? This train had a bad case of “flats” as you can hear. Flats are when train wheels lose their shape due to harsh braking, causing damage to the wheels, typically caused by adverse weather. Yes, leaves on the line can cause this. To repair, the wheels would need to to lathed, which means they are grinded back into a perfect round shape. #CentralLine #LondonUnderground #TfL #TubeWorker #London #Train #Railway #UK #FYP