"Safety is our top priority and the cause of this incident is being investigated. We apologise to customers for the inconvenience caused by the power cut and our staff restored all supplies as quickly and safely as possible."
More top news
The body of a 23-year-old who was last seen at the foot of Ben Nevis has been found following a large rescue mission.
A "predatory" paedophile who kept a "sickening" and detailed account of his abuse admitted a string of offences including 10 counts of rape.
Plans for a two-and-half-year closure of a Finsbury Park station entrance where there was serious overcrowding have been postponed.