Network Rail to close London to Hastings line from Robertsbridge through to Tonbridge for works to reduce landslips | Updated: 19:01, 12 February 2021 Engineers are working to rebuild the entrance to Wadhurst tunnel to reduce the risk of landslips. On Monday, Network Rail are closing the London to Hastings line from Robertsbridge through to Tonbridge as engineers tackle earthwork repairs. Engineers are working to rebuild the entrance to Wadhurst tunnel to reduce the risk of landslips. Picture: Network Rail A potential landslip at the southern end of Wadhurst Tunnel was picked up by early warning alarms in December, and the railway was protected immediately with temporary measures. A team had been mobilised to repair it, along with several other defects, over the course of this year.