The former prime minister says he offered counter arguments but ultimately acted to curb Covid.

But the former PM will argue robustly his government got many big pandemic calls right, sources say.

The ex-health secretary also said a "toxic culture", driven by Dominic Cummings, hindered the Covid response.

Evidence from top scientists suggests problems with the politics and science.

Former medical adviser tells the UK Covid inquiry he considered stepping down over safety fears.

But England's chief medical officer tells Covid inquiry government had no good options at the time.

Sir Patrick Vallance tells of threats to him and his family, as he criticises a "lack of leadership".

The UK's chief scientific adviser during Covid recorded his thoughts most evenings in handwritten notes.