Exclusive: quarter of parliamentary staff surveyed say they’ve witnessed someone being sexually harassed

Allegations of impropriety and what the prime minister knew, have called his future into question with those bombshell resignations of both the chancellor and health secretary.

Channel 4 News has been looking into the culture of harassment and impunity and tonight we have an exclusive investigation that shows how widespread the problems are across the political spectrum.

Half of the 51 parliamentary workers we spoke to said a victim of sexual harrassment had confided in them – and a quarter said they’d seen it happen themselves.

70% said they felt that if they reported inappropriate behaviour their careers would be harmed – and today parliamentary authorities admitted to us that there are barriers to speaking up.