For the last three years, since the result of the referendum on the European Union, Dominic Cummings has stayed at home, caring for his young son and dreaming of a return to power.

His reflections on everything during this period, from AI to Chinese politics, are documented on his blog, where his messages, summed up in a complex theory borrowed from army generals, from psychologists and management theorists, have thousands of words.

Although Cummings is known in the corridors of Westminster as a former special advisor and director of Vote Leave, he avoids cameras and the media.

His friends describe him as a private person who prefers to keep his personal life outside the newspapers.

Until the docu-drama of Channel 4 presented …