The British Transport Police (BTP) has referred itself to a watchdog after a crash involving a car and an e-bike.
Commuters leave thousands of cycles on racks outside stations every day, including in specially built bike parks with CCTV.
A driver has been seriously injured after a collision with an unmarked police car. The crash happened on the A1000 Great North Road in Hatfield, Hertfordshire, at about 14:18 BST on Monday. A blue ...