Passengers were thrown from their seats and hit by falling luggage on a train being driven at three times the speed limit, investigators have said.
People travelling on a train from Newcastle to London passed over three sets of points near Peterborough station at 75mph - while the maximum speed limit was 25mph. Those on board the service, at 10.20am on Sunday April 17, experienced the train "suddenly lurch forward".
At the time of the incident, the British Transport Police said 15 passengers reported minor injuries and were offered medical assistance by paramedics. The force received a report that the train's emergency brake was applied.