The House of Commons has been suspended after water started pouring through the ceiling.
The torrential leak is understood to have started in the roof above the press gallery canteen, on the floor above the chamber.
Commons deputy speaker Lindsay Hoyle has suspended the sitting of the House while the leak is dealt with.
Members of the press were removed from the gallery, as water was seen pouring through light fittings and down concrete walls at the back of the chamber.
Despite some claims that the leak is sewage, the source of the leak has yet to be confirmed.
House of Commons authorities tweeted: “We are aware of a water leak on the estate and are taking urgent action to resolve it.”
Tory MP Ross Thomson joked: “Not the first time there has been a leak in Parliament I’m sure”
And Huddersfield MP Neil O’Brien said: “The Commons Chamber has a new water feature! I’ve never been in a debate before where rain stopped play but it has happened now!”
