The prime minister wanted the controversial adviser to help the Tories win the election.
But an ally of the former health secretary said Boris Johnson's former aide is "not a reliable witness".
The secretary of state also apologised for government mistakes during the pandemic.
Just when we thought we'd heard it all, it turns out, we really hadn't.
Helen MacNamara claims that women running the country during Covid were "unable to do their jobs properly".
Boris Johnson's former aide really could not catch a break yesterday.
Here's a look back at the headlines which had everyone talking at the time.
Former prime minister's top aide slammed his leadership in a savage WhatsApp message.
From "disappearing messages" to the urge to "let the virus rip", the messages expose the chaos in government during the pandemic.
"We look like a terrible, tragic joke," he said in WhatsApp messages to Dominic Cummings and Lee Cain.