The police said a 21-year-old was held in connection with three fires, including two at properties linked to the British prime minister.

British police are investigating an overnight fire at a house belonging to Prime Minister Keir Starmer in north London in which nobody was hurt.

The Transport for London website showed that at least three subway lines were suspended due to a power failure, and there were severe delays and partial suspensions on at least six other lines during the Monday afternoon rush hour. The transport authority said it was working with the National Grid to determine the cause of the outage.

The Transport for London website showed that at least three subway lines were suspended due to a power failure and there were severe delays and partial suspensions on at least six other lines during the afternoon rush hour.