In episode two the nation and soon the world react to our devastating new evidence of partying. Paul reflects with GMB’s Susanna Reid on why the footage proved so explosive. Our sources give you the inside track on the private reactions of Number 10 staff as the prime minister denies rules were broken, before the scandal forces its first major resignation. Plus, how would Downing Street hunt our whistleblower who exposed the truth?

Partygate: The Inside Story was presented by Paul Brand. It was written by Paul Brand and David Williams with additional production by Nathan Lee and archiving by Lewis Denison, Elisa Menendez and Will Tullis. Audio production and sound design was by Dawn Kelly and Emma Roberts. The series was produced and directed by David Williams. The executive producer was Matt Williams.