TORY ministers are coming under increasing pressure to allow rail bosses to make an improved pay offer as train drivers prepare for another overtime ban this week. 

Sixteen train operating companies face a further six days of industrial action by train drivers’ union Aslef from Monday.

South Western, Northern, Great Western and Chiltern have already warned passengers to expect short-notice alterations and cancellations, as they rely on drivers working overtime to run full schedules.