The Health and Safety Executive is investigating the explosion which happened on Pimlico Road in central London, yesterday morning.
"We are aware of this and we are making inquiries into what happened."
More top news
Detectives investigating an assault in Newham have released CCTV footage in a bid to identify the two suspects who attacked a 23-year-old.
Concern is growing for the welfare of a 28-year-old woman who has not been seen for more than two weeks.
A police officer in today's London Pride parade surprised his partner by proposing in the middle of the parade.