Posted By: granny
No.10 Announcement at 11.15am - 18th Apr 2017 9:59am
Nobody knows what it's about.
Theresa May is to make a surprise statement in Downing Street at 11:15 BST after her Cabinet meets.
In an unusual move, Number 10 did not announce what subject she would address but statements by the PM in the street are usually reserved for big announcements.
There is speculation that Mrs May could call a snap general election.
Downing Street has always denied she will call a vote before the next scheduled poll in 2020.
BBC assistant political editor Norman Smith says broadcasters usually know what is about to be announced, but on this occasion they do not.