This decision means the service, one of the country's fastest and popular with commuters, will operate as “empty coaching stock” (ECS) with only crew on board.
The ORR justified the change by stating it will improve overall network reliability and performance, allowing for more flexible handling of the train during disruption.
The move has been widely criticised by business leaders and politicians, including Greater Manchester Mayor Andy Burnham, who described it as treating northern passengers as “second-class citizens”.
Avanti West Coast was reportedly against the decision, which affects a lucrative service connecting two significant economic centres.