Track fastenings failure led to the Sheffield cement train derailment in November, says the independent watchdog in the UK, the Rail Accident Investigation Branch. The RAIB has determined that a track failure led to the calamitous derailment of a cement train in Sheffield station, which caused widespread disruption across the network. That is the headline from the preliminary report, just published, into the derailment on 11 November 2020. Initial examinations suggest the track was already broken prior to the accident.