This is the first time a female commissioner will lead the Met in its 187 year history.
The Metropolitan Police protects the greater London area but is also involved at a national level in anti-terrorism and other functions.
A career policewoman, Cressida Dick, joined the Met more than three decades ago.
“I could not be more pleased to be appointed as the commissioner. It’s beyond my wildest dreams, an extraordinary privilege and I’m very humbled.”
London Mayor Sadiq Khan has welcomed the appointment.
“This is a historic day for London and a proud day for me as the mayor."
In South Africa, debate has flared for years about the need to appoint police commissioners with experience, not political connections.
