Rocks and a scooter are among objects thrown at trains in a spate of “incredibly dangerous” attacks from a bridge above a 120mph railway line, an operator said.
Direct international train services between London and destinations such as Germany and Switzerland could be launched amid plans to boost the capacity of St Pancras station.
Reliability on Britain’s railways reached a record low last year, with more than one in 25 services cancelled amid industrial disputes and staffing shortages.
Campaigners are calling for price caps on long-distance train tickets, as a survey suggests 44% of people are put off from travelling by train by the cost.
Network Rail has announced the closure of the West Coast Main Line north of Preston and the East Coast Main Line north of Newcastle for much of Friday as Storm Eowyn looms.