The inquiry’s report is thought to be more than 2,000 pages long across multiple volumes.
But most attention will focus on a number of key questions.
Was there a cover-up? Greater Manchester Mayor and former health secretary Andy Burnham thinks so – in 2017 he told the House of Commons there has been one on an “industrial scale”.
Among the inquiry’s terms of reference is a requirement to explore whether there were attempts to conceal what happened by the government or NHS.
Attention will also be paid to what the report says about the timeliness of government action.
Was it too slow to recognise the risks of infected blood? Should the UK have stopped using blood products imported from the US, where prisoners and drug-users were paid for blood, sooner?
And was enough done to subsequently identify those who were infected?
A BBC investigation suggests the UK government and the NHS failed to adequately trace those who were most at risk of having the virus.