The prime minister's office has instructed the UK's Cabinet Office to investigate Prime Minister Boris Johnson's texts with vacuum cleaning tech billionaire Sir James Dyson, a spokesman for Johnson said today.

The internal inquiry, the results of which may not be made public, comes just a day after the BBC reported on 21 April that then Singapore-based Brexiteer Dyson had texted Johnson to ensure senior executives at his company would not be exposed to tax if they travelled to the UK to help with a project to produce ventilators during the coronavirus pandemic in March 2020.