“Fortunately nobody has died,” the BTP tweeted shortly after 9:00 p.m. native time (5:00 p.m. EDT) Sunday.
Officers are persevering with to answer the incident on the Fisherton Tunnel, the company added.
Earlier Sunday, BTP officers had been referred to as to help, “following stories a prepare derailed.”
A tweet from the Wiltshire Police additionally mentioned law enforcement officials had been responding with hearth and ambulance service “on the scene of a prepare crash involving two trains between Andover and Salisbury.”
An announcement from Community Rail Wessex mentioned the incident concerned the 17:08 p.m. Nice Western Railway service between Portsmouth Harbour and Bristol Temple Meads and the 17:20 p.m. South Western Railway service from London Waterloo to Honiton.
The road stays closed as emergency providers perform their work, Community Rail Wessex added.