Transport bosses in London are accused of not publishing monthly figures on Tube delays as a signal failure caused problems for commuters on one of the system’s busiest lines.
Labour said Transport for London had published the figures since 2003 but claimed they had “mysteriously disappeared” for the last four months.
London Assembly member Val Shawcross said it was time for “urgent answers” from Mayor Boris Johnson, adding: “If the Government stopped publishing monthly unemployment figures or Metropolitan police refused to publish the monthly crime statistics there would be an outcry.
“It would be completely unacceptable if after months of delays and disruption on the Tube the Mayor has decided to hide the figures.”
Travellers on the Victoria Line suffered disruption on Tuesday because of a signal failure at Seven Sisters, while First Capital Connect services into London were hit by a train failure at Farringdon.