So here goes... 12 parties, starting with:

15 May 2020: Groups of people gathered in the No 10 garden with cheese and wine - a photo of which was published in the Guardian newspaper, but does not appear in the report.

Gray says Boris Johnson brought the cheese and wine from his flat for the meeting, which lasted up to an hour.

The event consisted of a number of separate meetings, including one between the prime minister, his principal private secretary Martin Reynolds and his former adviser Dominic Cummings.

But she seems assured it was for work.

Image source, Sue Gray Report

It's been a frenzied few hours since Sue Gray's report dropped. We've since had the weekly session of PMQs, followed by a statement from Boris Johnson.

As we've just told you, there's a news conference coming up in an hour or so, so let's take a moment to recap some of the report's main points:

• Staff partied in Downing Street while the rest of the country was in lockdown with the approval of their bosses
• Many events "should not have been allowed to happen" and senior leadership "must bear responsibility for this culture", the report says
• There was excessive drinking, with staff being sick, and lack of respect shown to cleaning and security staff
• Some staff partied until after 4am on the eve of Prince Philip's funeral
• Warnings were ignored about parties breaking Covid rules

Read our full story and stick with us here as we pore over the details of the parties one by one.

We thought it was likely to come, but we have now had it confirmed - Boris Johnson will hold a news conference in Downing Street at 15:30 BST, following the publication of Sue Gray’s report.

Image source, Getty Images

We've got some reaction from the Covid-19 Bereaved Families for Justice group, with spokesman Lobby Akinnola saying that while the country had one of the highest death rates in the world from the pandemic, Downing Street was "celebrating over cheese and wine and drinking themselves sick over a karaoke machine".

"When they were texting colleagues about getting away with it, we were having to text our families telling them they couldn't come to their loved ones' funerals," he says.

He says the report reveals that they knew how disrespectful they were being to bereaved families "but that didn't bother them".

Akinnola says the prime minister "spent months ignoring and lying to us", treating bereaved families like they treated cleaning staff and security staff who challenged the law-breaking gatherings - "like we're an inconvenience, like we're dirt".

He says: "The Tory MPs that have kept him in power are no better. They should know that just as we will never forget being apart from those closest to us whilst they passed away, or having to hold miserable funerals with only a handful of people, millions will never forgive them for the disrespect they've shown."

Labour MP and chairman of the standards committee, Chris Bryant, calls the PM's statement "a load of baloney".

He says Boris Johnson just provided "excuse after excuse after excuse" and it "won't wash with the British public, who are sick and tired of being taken for fools".

Bryant also raises the poor treatment of security and cleaning staff, and asks if the prime minister has "no sense of shame that Downing Street under him has been a cesspit full of arrogant, entitled narcissists".

Johnson says it is "absolutely disgraceful in any circumstances to be rude to people helping you".

And he says he will make sure those who took part either apologise to those staff or are disciplined.

Labour MP for Slough Tanmanjeet Singh Dhesi gives an impassioned speech, saying he feels he "completely let down" loved ones by staying away during lockdowns.

"Why did I let her die alone in that hospital?" he asks about his grandmother. "Why did I not attend the funeral of my uncle?"

He criticises the "hypocrisy" of those in government who use patriotic messages to encourage people to follow Covid rules, while holding late-night parties as the country was in "national mourning" over the death of Prince Philip.

He calls the prime minister "absolutely shameless" and says "it is not the support and sympathy of the British people that is keeping him in office" but the support of other Tory MPs.

Image source, House of Commons

Conservative former housing secretary Robert Jenrick says the report is not a "stain upon the character" of the thousands of civil servants who helped steer the country through the pandemic.

And then he suggests - to some shouts of objection in the chamber - that it is time to move on:

Johnson says he agrees with him "absolutely passionately".

"The best thing now for our country is to move forwards together," he says.

Image source, House of Commons

The leader of the Liberal Democrats says the prime minister may say he is sorry, "but he is only sorry he got caught".

Sir Ed Davey asks whether Boris Johnson can "look the British people in the eye and name one person, just one person, he cares about more than himself".

The prime minister responds by saying people in Downing Street "care passionately" about protecting the country from Covid.

And he condemns abuse directed at civil servants and officials.

The leader of the SNP in Westminster says Sue Gray's report is "damning", quoting it at length.

Ian Blackford points to the blame put on senior leadership, adding that the PM "must bear responsibility for the culture - a fish rots from the head".

He says Boris Johnson had been misleading about his attendance at a leaving do, and misleading parliament is a resigning matter.

"Ethics have to be part of our public life and ethical behaviour has to be at the core... of the prime minister. The prime minister brings shame on this office."

Johnson replies, saying the leader should look closely at the report.

He stresses the nature and length of his involvement in parties is "very clear" and he takes "full responsibility", but that is why he has made reforms to No 10.

Tobias Ellwood, a senior Tory and former minister, is heckled by his own side as he tells the House the prime minister does not have his support.

It's not the first time he's said that, and he goes on to ask his fellow Tory MPs whether they are willing "day in and day out to defend this behaviour publicly".

Conservative former justice secretary Sir Robert Buckland asks whether the PM has, on any occasion, deliberately lied to Parliament about Partygate?

"No," Johnson replies.

"At the time that I spoke to this House, I believed that what I was doing was to attend work events. With the exception of the event in the Cabinet Room, that is a view that has been vindicated by the investigation."

The ministerial code,, external governing standards of behaviour in office, says ministers who knowingly mislead Parliament will be expected to offer their resignation.

Starmer doesn't hold back but Partygate's poison not confinedpublished at 13:21 British Summer Time 25 May 2022

13:21 BST 25 May 2022

Iain Watson
Political correspondent

The Labour leader doesn’t hold back – the standard of conduct was set "lower than a snake’s belly".

While he is spitting political venom, the poison of Partygate isn’t confined to one party.

Keir Starmer is being investigated by police over the beer and curry takeaway in Durham.

He has to use part of his response to the PM to assert that he hasn’t broken any rules.

And to repeat he’d resign if he is wrong.

He wants to draw a comparison with Boris Johnson.

But he is inevitably reminding people that his own behaviour will remain something of a grey area until Durham police have concluded their inquiries.

Johnson calls him "Sir Beer Korma".

However, many of Johnson’s own MPs were expecting humility,

And political knockabout may not be what some of them want to hear.

Responding to the Labour leader, Boris Johnson says his opposite number was not busy leading hundreds of people during the pandemic, but "sniping from the sidelines and veering from one position to the next".

He says "time after time" Sir Keir Starmer focused on parties when asking questions in the Commons, rather than using "common sense" to understand that it was "difficult to draw the boundary between work and socialising".

The prime minister accuses him of having a "sanctimonious obsession" with Partygate, which has been "punctured" by the investigation into his actions in Durham.

"He should at least be consistent and hold himself to the same standards," Johnson adds

Back to the Labour leader, who pauses for some jeers as he criticises the PM's leadership and says he has been "clear what leadership looks like". That's because Sir Keir Starmer is addressing the allegations against him that his beer and takeaway while campaigning in Durham also broke the rules.

He says "I haven't broken any rules" and calls it a "perfectly legal takeaway".

But he says if the police decide otherwise "I will do the decent thing" and stand down.

"The public need to know that not all politicians are the same," he says.

Tory MPs will decide if Johnson is allowed to 'move on'published at 13:09 British Summer Time 25 May 2022

13:09 BST 25 May 2022

Iain Watson
Political correspondent

"I take ultimate responsibility." Boris Johnson’s words to the House of Commons.

He suggests he is not trying to "mitigate" what went on behind the Downing Street black door.

But it may sound exactly like mitigation when he says that events only seemed to go wrong after he left.

And that only eight events broke regulations in 600 days of the pandemic.

He did attend some leaving dos - but he was "surprised and disappointed" at how these events had developed.

And he seeks to get his retaliation in first on the question of whether he misled parliament when he told MPs that guidance had been followed inside No 10.

He said: "It was what I believed to be true."

Whether he is allowed - as he wishes – to "move on" will depend on whether enough of his own MPs find this statement credible.

Starmer contrasts what the PM said in press conferences with what's been revealed in the report, saying "it is now impossible to defend the prime minister's words to this House".

"This is about trust", he says, pointing out that officials were hiding bottles after a press conference where the PM said "normal life is a long way off".

"This wasn't the case in No 10," he adds.

He says the government expects others to take the blame while they cling on and acts as if the PM has been exonerated, when he was fined for a breach of the law.

They "set the bar for his conduct lower than a snake's belly", Starrmer says.

Starmer says the Sue Gray report "lays bare the rot" of the government and shows how people in No 10 "treated the sacrifice of the British people with utter contempt".

He says the report is "a monument to the hubris and arrogance" of a government that believed there was one rule for them and another rule for everyone else.

Labour leader Sir Keir Starmer says the door of No 10 Downing St is "one of the great symbols of our democracy" and the prime minister has great power but his stay there is only temporary.

He says Britain's constitution is "fragile" and relies on leaders "behaving responsibly, honestly and in the interests of the British people."

"When our leaders fall short, this House must act," he says.