His abrasive style and uncompromising attitude towards those he regards as lazy or intellectually inferior, which would include most MPs, have made him few friends at Westminster.

Dominic Cummings is more than just a run-of-the-mill adviser to Prime Minister Boris Johnson.

In many ways, the government's agenda has been forged by his ideas and Mr Johnson has relied heavily on his strategic insights into the mood of voters, gathered from focus groups. — BBC