The PSNI chief constable has been named among the favourites to succeed Met Police Commissioner Cressida Dick, according to reports.
She dramatically quit the role on Thursday night, just hours after saying she had "absolutely no intention" of standing down.
London Mayor Sadiq Khan said he was "not satisfied" Dame Cressida could "root out the racism, sexism, homophobia, bullying, discrimination and misogyny that still exist" in the force or restore Londoners' trust.
