The Department for Transport does not hold information specifically about delay minutes on the railways broken down by cause of delay.
Data on rail performance, including on delay minutes, are published by the Office of Rail Regulation. For recent annual assessments of Network Rail and whole-industry performance, the hon. Member may wish to consult the Office of Rail Regulation’s website at:
www.rail-reg.gov.uk/server/show/nav.2050
Historically published information can also be viewed at:
http://www.rail-reg.gov.uk/server/show/nav.1240