Police Commissioner Bernard Hogan-Howe will visit a school in Edmonton today that was blighted by knife crime.
Negus McClean was stabbed to death by a gang a year ago, following a fight over a BlackBerry mobile phone.
More top news
The man believed to have murdered Alice Gross walked into Britain unchecked despite having a conviction in Lativia for murdering his wife.
Former residents of the Chagos Islands have lost their latest legal challenge at the Supreme Court.
Their warning depends on whether negotiations for a post-Brexit Britain do not offer freedom of movement for people, capital and goods.