Keir Starmer has issued his angriest denunciation yet of Boris Johnson over lockdown parties in No.10.
The Labour leader said Mr Johnson "broke the law" and then "lied about what had happened".
It follows a slew of revelations and allegations about what the PM knew and did about a drinking culture at No.10.
Speaking on BBC's Sunday Morning programme, Sir Keir, a former director of public prosecutions said: "I think he broke the law. I think he's as good as admitted that he broke the law.
"And, after all, Downing Street has now apologised to the Queen for some of the parties that have gone on."
Recommended Keir Starmer says Boris Johnson must resign ‘in the national interest’ Record 70% of voters tell Boris Johnson to quit as No 10 parties scandal grows No 10 apologises to The Queen for ‘parties’ on eve of Prince Philip’s funeral
Sir Keir continued: "I know that the Government's holding position is 'let's all wait for the Sue Gray report'.
"But I think it's pretty obvious what's happened, this industrial-scale partying had been going on at Downing Street, not much of it is really denied, and I think that the public have made up their mind. I think the facts speak for themselves.
"I think the Prime Minister broke the law, I think he then lied about what had happened."
There have been over a dozen different allegations of festivities in government while lockdown rules have been in effect – but no charges have been brought by the police.
Asked whether the police were right to wait for the results of the Sue Gray inquiry before investigating the Number 10 parties, Sir Keir said: "Once Sue Gray has come to her findings, she will set out all the facts, she is very well respected, I think that all of those should be passed to the police to look at.
UK news in pictures Show all 50
1/50UK news in pictures
UK news in pictures 15 January 2022 Demonstrators outside Downing Street during a ‘Kill The Bill’ protest against The Police, Crime, Sentencing and Courts Bill in London.
PA
UK news in pictures 14 January 2022 Ecologist Emma Smart (left) and retired GP Dr Diana Warner outside HMP Bronzefield, in Surrey, following their release from the prison where Emma undertook a 26-day hunger strike during her incarceration. Ms Smart was sentenced in November, along with other members of Insulate Britain, to serve four months for breaking a High Court injunction by taking part in a blockade at junction 25 of the M25 motorway during the morning rush hour on 8 October last year
PA
UK news in pictures 13 January 2022 A TV presenter holds a copy of a newspaper outside 10 Downing Streetafter the Prime Minister apologised for attending a gathering of colleagues in the Number Ten garden in May 2020, while the UK was in strict lockdown due to the Coronavirus pandemic
Getty
UK news in pictures 12 January 2022 Fitness guru Derrick Evans after receiving an MBE during an investiture ceremony at Windsor Castle
PA
UK news in pictures 11 January 2022 A couple walk underneath an umbrella during wet weather on Westminster Bridge in central London
PA
UK news in pictures 10 January 2022 A jogger passes the Covid Memorial Wall in London
AP
UK news in pictures 9 January 2021 The sun rises over horses at Seaton Sluice in Northumberland
PA
UK news in pictures 8 January 2022 Riders compete during the Veterans Men's race at the UK Cyclo-Cross National Championships 2022 in Ardingly, south of London
AFP/Getty
UK news in pictures 7 January 2022 A dog looks out of a car window at the wintry conditions in Killeshin, Co. Laois
PA
UK news in pictures 6 January 2022 People walk through frost and mist alongside a frozen lake during sunrise in Bushy Park, London
REUTERS
UK news in pictures 5 January 2022 A skier jumps on the slopes at Allenheads in the Pennines to the north of Weardale in Northumberland
PA
UK news in pictures 4 January 2022 Freshly-fallen snow covers houses in Corbridge, near Hexham in Northumberland
PA
UK news in pictures 3 January 2022 Dean Morrison, 13, receives his Covid-19 vaccine from student nurse Anthony McLaughlin during a vaccination clinic at the Glasgow Central Mosque
PA
UK news in pictures 2 January 2022 Konastantinos Tsimikas of Liverpool with Chelsea’s Mason Mount during the Premier League match at Stamfrod Bridge
Liverpool FC/Getty
UK news in pictures 1 January 2022 New Year’s Eve Lasers, drones and fireworks illuminate the sky in front of the Royal Naval College in Greenwich shortly after midnight in London
EPA
UK news in pictures 31 December 2021 Competitors in fancy dress run across the Pennine tops near Haworth, West Yorkshire, in the annual Auld Lang Syne Fell race which attracts hundreds of runners every year
PA
UK news in pictures 30 December 2021 Sunrise at Bamburgh Castle in Northumberland
PA
UK news in pictures 29 December 2021 The Very Revd Dr Robert Willis, Dean of Canterbury Cathedral, looks at Becket, a six month old red-billed chough as he visits Wildwood Wildlife Park in Kent on the anniversary of the murder of Thomas Becket
PA
UK news in pictures 28 December 2021 Troops of the Household Cavalry are seen reflected in a puddle during the changing of the Queen’s Life Guard, on Horse Guards Parade, in central London
PA
UK news in pictures 27 December 2021 A pedestrian walks past a winter sale sign outside a John Lewis store on Oxford street in London
Getty
UK news in pictures 26 December 2021 Riders take their bikes through the snow near Castleside, County Durham
PA
UK news in pictures 25 December 2021 Patrick Corkery wears a santa hat and beard as waves crash over him at Forty Foot near Dublin during a Christmas Day dip
PA
UK news in pictures 24 December 2021 People stand inside Kings Cross Station on Christmas Eve in London
Reuters
UK news in pictures 23 December 2021 Christmas shoppers fill the car park at Fosse Shopping Park in Leicester
PA
UK news in pictures 22 December 2021 The sun rises behind the stones as people gather for the winter solstice at Stonehenge.
Getty
UK news in pictures 21 December 2021 People take part in a winter solstice swim at Portobello Beach in Edinburgh to mark the solstice and to witness the dawn after the longest night of the year
PA
UK news in pictures 20 December 2021 An auction employee displays poultry to buyers and sellers attending the Christmas Poultry Sale at York Auction Centre in Murton
PA
UK news in pictures 19 December 2021 Joao Moutinho of Wolverhampton Wanderers looks on during the Premier League match between Wolverhampton Wanderers and Chelsea at Molineux
Getty Images
UK news in pictures 18 December 2021 Freight lorries queuing at the port of Dover in Kent
PA
UK news in pictures 17 December 2021 Newly elected Liberal Democrat MP Helen Morgan, bursts 'Boris' bubble' held by colleague Tim Farron, as she celebrates following her victory in the North Shropshire by-election
PA
UK news in pictures 16 December 2021 Brussels sprouts are harvested by workers as they prepare for the busy Christmas period near Boston in Lincolnshire
PA
UK news in pictures 15 December 2021 Lewis Hamilton is made a Knight Bachelor by the Prince of Wales at Windsor Castle
PA
UK news in pictures 14 December 2021 The Royal Liver Buildings surrounded by early morning fog in Liverpool
PA
UK news in pictures 13 December 2021 People queue outside a walk-in Covid-19 vaccination centre at St Thomas's Hospital in Westminster
Getty Images
UK news in pictures 12 December 2021 People take part in the Big Leeds Santa Dash in Roundhay Park, Leeds
PA
UK news in pictures 11 December 2021 People arrive at a Covid-19 vaccination centre at Elland Road in Leeds,
PA
UK news in pictures 10 December 2021 Stella Moris speaks to the media after the US Government won its High Court bid to overturn a judge’s decision not to extradite WikiLeaks founder Julian Assange
PA
UK news in pictures 9 December 2021 Camels are lead around Salisbury Cathedral during a rehearsal for the Christmas Eve Service
PA
UK news in pictures 8 December 2021 Margaret Keenan and Nurse May Parsons, a year after Margaret was the first person in the UK to receive the Pfizer vaccine
PA
UK news in pictures 7 December 2021 Snowfall in Leadhills, South Lanarkshire as Storm Barra hits the UK with disruptive winds, heavy rain and snow
PA
UK news in pictures 6 December 2021 A person tries to avoid sea spray on New Brighton promenade in Wallasey as the UK readies for the arrival of Storm Barra
Getty
UK news in pictures 5 December 2021 People release balloons during a tribute to six-year-old Arthur Labinjo-Hughes outside Emma Tustin's former address in Solihull, West Midlands, where he was murdered by his stepmother
PA
UK news in pictures 4 December 2021 People walk through a Christmas market in Trafalgar Square
Reuters
UK news in pictures 3 December 2021 A pedestrian carries a dog as they dodge shoppers on Oxford Street in central London
AFP/Getty
UK news in pictures 2 December 2021 Duchess of Cambridge inspects a Faberge egg at the Victoria and Albert Museum
Getty
UK news in pictures 1 December 2021 Meerkats at London Zoo with an advent calendar
PA
UK news in pictures 30 November 2021 Workers put the finishing touches to the Trafalgar Square Christmas Tree ahead of the lighting ceremony later in the week
PA
UK news in pictures 29 November 2021 Home Secretary Priti Patel is greeted by a police dog at a special memorial service for Met Police Sergeant Matiu Ratana
Getty
UK news in pictures 28 November 2021 Riyad Mahrez of Manchester City battles for possession with Aaron Cresswell of West Ham United during a match at the Etihad during snow
Manchester City/Getty
UK news in pictures 27 November 2021 Residents clear branches from a fallen tree in Birkenhead, north west England as “Storm Arwen” triggered a rare “red weather” warning
AFP via Getty Images
Recommended ‘The party’s over’ – Keir Starmer tells Boris Johnson he has to quit Tory MP says Boris Johnson should resign if he attended No 10 party Boris Johnson scrambles for plan to ‘help’ families facing ￡600 energy bill hike
"I don't go along with this idea that we've all got to wait somehow, I think it's blindingly obvious what has happened."
The latest revelations have seen the Tories tank in the polls, giving Labour a lead of around 10 points.