Diane Abbott has described a "perfect storm" of racist and sexist abuse she suffered after claims David Davis tried to kiss her in a House of Commons bar.

Labour's shadow home secretary explained that she felt forced to write about the levels of discrimination she suffers because it puts women off politics.

In an article in the Guardian Ms Abbott, who missed the first vote on Article 50 because of a migraine, said many female MPs suffer sexism and called for it to stop.