The Metropolitan Police Commissioner Sir Mark Rowley has said that he will institute a tougher vetting policy for new officers after David Carrick pleaded guilty to sexual assault. 

Carrick pleaded guilty to four counts of rape at Southwark Crown Court on 16th January, in addition to having already pleaded guilty to 43 offences, among them 20 counts of rape, at the Old Bailey on 13th December. 

Rowley has pledged to take further action to review current officers and the existing vetting process for new police officers. 

He said: "We failed in two respects. We failed as investigators where we should have been more intrusive and joined the dots on this repeated misogyny over a couple of decades. 

"And as leaders, our mindset should have been more determined to root out such a misogynist. 

"I have promised action. From my first day four months ago, I said that the Met will become ruthless at rooting out those who corrupt our integrity. That's because our integrity is our foundation. 

"We haven't guarded this as ferociously as we must and we will do. In the four months to date, we've launched a new anti-corruption and abuse command, putting 30 per cent more officers into fighting corruption.  

"And we've done public appeals. We've raised 250 fresh lines of inquiry, and we're doing more proactive work against problematic officers than ever before. I've also brought in new leadership to lead this work, to reform our integrity. 

"At the end of March, I plan to write to the Home Secretary and the Mayor in an open public letter. And by then, we will also have finished reviewing all of our people, having checked their details against all the police, national intelligence data in the police national database. 

"We'll have begun a full review of our national vetting process, we'll have completed Operation Onyx, which is our review of the officers and staff whom we have concerning domestic or sexual incident reports against. 

"And we'll also have tested new legal routes to dismiss those who fail vetting. 

"We will reform at speed. I promise that to Londoners." 

Rowley also apologised to the victims and all citizens of London, saying that Carrick should never have been a police officer. 

He said: "This man abused women in the most disgusting manner. It is sickening. We've let women and girls down and indeed we've let Londoners down.  

"The women who suffered and survived this violence have been unimaginably brave and courageous in coming forward.  

"And I do understand also that this will lead to some women across London questioning whether they can trust the Met to keep them safe. 

"We have failed. And I'm sorry. He should not have been a police officer. 

"We haven't applied the same sense of ruthlessness to guarding our own integrity that we routinely apply to confronting criminals. 

"These failures are horrific examples of the systemic failures that concern me and were highlighted by Baroness Casey in her recent review.  

"I do know an apology doesn't go far enough, but I do think it's important to acknowledge our failings and for me to say I'm sorry. 

"I apologise to all of David Carrick's victims. And I also want to say sorry to all of the women across London who feel we've let them down."