Train operator Northern has axed 165 daily services until the end of July to improve reliability amid major disruption.
Passengers have been hit with hundreds of delays and cancellations since new timetables were introduced on May 20.
An 'interim timetable' will be introduced on Monday with 165 trains removed - 6 per cent of Northern's total services.
Northern has cancelled six per cent of its services in order to improve reliabilityiPhone transfer software
Transport Secretary Chris Grayling, pictured, said he believes the disruption facing passengers is 'unacceptable'
Northern's chief executive David Brown, pictured apologised for the 'unacceptable service'
Areas affected include Manchester, Liverpool, Blackpool and the Lakes Line between Oxenholme and Windermere.
Northern insisted it will still run more trains than it did before last month's timetable change, and expects to 'get back to a full timetable service by the end of July'.
The firm's managing director David Brown said: 'We have been experiencing some significant disruption to train services, especially around north Manchester, Bolton, Liverpool, Blackpool and up to the Lake District.
'I'd like to apologise for this unacceptable situation and for the disruption and inconvenience many passengers have faced. We're truly sorry for this and are working hard to fix this.
'Again I would like to apologise on behalf of Northern for the unacceptable service many customers have been subject to.
'We are absolutely committed to resolving the service issues, and the interim plan will help ensure we start to get back on track and start to give customers more certainty around the services we operate.'
David Sidebottom, passenger director at Transport Focus, said passengers want 'accurate information' and called for 'an honest, realistic interim plan that leads to a return of reliable services'.
London Mayor Sadiq Khan said