Collision between train and maintenance equipment, Stowe Hill Tunnel
Collision between passenger train and a trolley, Stowe Hill Tunnel, Northamptonshire, 7 December 2016.
![Rear facing CCTV image of Stowe Hill Tunnel (courtesy of Virgin Trains)](https://assets.publishing.service.gov.uk/government/uploads/system/uploads/image_data/file/59479/s300_Stowe_Hill_Tunnel.jpg)
Rear facing CCTV image of Stowe Hill Tunnel (courtesy of Virgin Trains)
At around 10:00 hrs on 7 December 2016, a Manchester to London Euston express service struck an engineering trolley. This caused the outer pane of a window to be broken and caused some underframe damage. No one was hurt. The trolley was one of four that had been stored in the tunnel since the night of 4/5 December.
We have undertaken a preliminary examination into the circumstances surrounding this accident. Having assessed the evidence which has been gathered to date, we have decided to publish a safety digest.
The safety digest will shortly be made available on our website.