text: On 14 August 2017, 66713 was hauling a freight train that derailed near , due to defective suspension on the wagon that was first to derail. The railway between Ely and  was closed for a week.
  On 4 September 2018, 66230 was hauling a freight train which collided with a vehicle on a level crossing at Dollands Moor Freight Yard, Kent. One cab was extensively damaged in the post-impact fire. The locomotive was stored in Toton TMD.
  On 23 January 2020, 66154 was hauling a freight train which derailed at Wanstead Park and ran for  before stopping near  station.
  On 23 March 2020, 66057 ran through a buffer stop at the end of a siding at  and was derailed. The derailment caused the locomotive to foul the main line, and a Class 170 diesel multiple unit, unit number 170 107, collided with the derailed locomotive at around . No one was injured. The driver of the locomotive was subsequently convicted of an offence contrary to the Health and Safety at Work Act 1974. He was sentenced to 8 months' imprisonment, suspended for 18 months.
  On 11 November 2020, 66603 was hauling a freight train that derailed at . The derailment was caused by broken rail fastenings which allowed the track to spread.