A 90-second power cut at one rail control centre paralysed North West trains

Network Rail's Rail Operating Centre in Manchester, responsible for signalling across large parts of the North West, was hit by a local power cut that was resolved within 90 seconds. But the centre's backup supply 'failed to kick in as quickly as expected,' and the interruption damaged the systems controlling signalling - the railway's traffic lights. Trains had to stop while systems were rebooted; some hardware had to be physically replaced, which took time.

The disruption cascaded across the North West of England and beyond, as trains and crews were left out of position across one of the country's busiest networks, and commuters faced days-defining chaos. Network Rail apologised to customers and opened an investigation, with bosses saying engineers had been working to 'build additional resilience into our signalling systems to ensure that this doesn't happen again.'

The structural critique was immediate. Network Rail had replaced hundreds of older signal boxes with just 12 high-tech Rail Operating Centres meant to centralise control of the network - Manchester's opened in 2014. Rail writer Christian Wolmar: 'if one thing goes wrong, it can wipe out, as we saw, quite a lot of the network.' Engineer Gareth Dennis linked the failure to funding pressures and job cuts, asking whether enough staff existed 'to be ensuring that things like those checks of that supply are happening.'

Trains stopped across the North West of England and beyond while damaged signalling systems were rebooted and parts replaced

Signalling control was consolidated from hundreds of signal boxes into 12 hubs, so one centre's failure had region-wide reach.

The Manchester centre's backup power supply did not engage as expected during a 90-second outage.

The outage damaged signalling hardware, turning a momentary cut into a physical repair job.

Funding pressure and staffing cuts raised questions about whether resilience checks were adequately resourced.

Centralising control multiplies efficiency and blast radius alike: one building's 90-second failure became a region's rail crisis.

Network Rail apologised and opened an investigation into how its systems coped and responded. The publicly owned body already faced abolition as a separate entity under government plans for Great British Railways, with its funding under severe pressure from inflation and extreme weather costs.