Twitter vows to act more swiftly after banning Leslie Jones abuser

Twitter bars Milo Yiannopoulos for good after Jones quit the network following tweets that left her in 'personal hell'

Twitter has vowed to act more quickly and effectively against online abuse having banned one of its most notorious users following a campaign of vitriolic racist and sexist abuse against the Ghostbusters actor Leslie Jones.

Milo Yiannopoulos, a British columnist with the rightwing website Breitbart, was permanently barred from Twitter after Jones quit the network on Tuesday in response to a wave of abusive tweets, which she said left her in a "personal hell".