The Prime Minister was quizzed over whether he can confirm all four nations in the UK will leave the EU "as a whole" by the end of the transition period on December 31. He revealed it would and warned the EU it must "accept the reality" that Britain will regain control of its waters.
He told the Commons: "Our position on fish hasn't changed, we'll only be able to make progress when the the EU accepts reality we must be able to control access to our waters."
His warning came as he faced Labour leader Sir Keir Starmer during this afternoon's Prime Minister's Questions as the UK prepares to enter a strengthened version of the coronavirus three-tier system.
Mr Johnson went head to head with his rival from Downing Street via video link as he continues to self-isolate after meeting an MP who later tested positive for COVID-19.
The Tory leader this week made a number of major announcements over how his Government are planning to tackle the coronavirus in the upcoming Winter weeks ahead of Christmas.
Mr Johnson announced England will come out of lockdown on December 2, with a strengthened version of the national tier system brought in instead.
While, up to three households will be allowed to get together for five days over the festive period in what is known as a ‘Christmas bubble’.
FOLLOW EXPRESS.CO.UK BELOW FOR LIVE UPDATES
Boris Johnson has clashed with Keir Starmer
12.35pm update: PM quizzed over expected public sector pay freeze
She said: "Does the Prime Minister really recognise that claps don't pay the bills?"
12.30pm update: Boris hit with criticism on Twitter
The PM came under fire over an expected pay freeze of the public sector.
The Tooting MP said: "Average price the Govt paid for PPE items: Feb-Jul '19: 2p. Feb-Jul '20: 39p.(x18 increase)
"Global shortages and urgency would have definitely increased prices but be in no doubt that a lot of people have made a lot of money from this pandemic.
"They are morally bankrupt."
Angela Rayner MP has also hit out on Twitter, saying: "If the government can find the money to give contracts to their mates, they can find the money to give our keyworkers a pay rise.
"Boris Johnson fell over himself to clap our keyworkers when the cameras were rolling and now he's selling them out. The man is a charlatan. #PMQs"
Conservative MP Dehenna Davison (Bishop Auckland) said: "I'm sure, like me, the Prime Minister welcomes the incredibly valuable contribution of our essential workers in keeping our society moving, our economy turning and keeping us safe.
"But we know that many of our constituents are facing challenges through Covid. So on that note, does the Prime Minister agree with me and many colleagues that as we are having intense discussions on how to balance the nation's finances, that now is not the time for an MPs' pay rise?"
Mr Johnson replied: "Yes, I do agree with that and that is why we have frozen ministerial salaries this year - as indeed they have been frozen by successive Conservative governments since 2010.
"And I know that IPSA (Independent Parliamentary Standards Authority) will have heard (Ms Davison) and I'd encourage them not to proceed."
Boris Johnson sent a warning to the EU
12.15pm update: Boris under pressure over foreign aid cull
Mr Johnson said: "The Conservative Government invented it, and this country can be incredibly proud.
"This country is one of the biggest donors overseas in all its form ... whether in percentage terms, or cash terms. That will continue."
12.11pm update: PM urged to come clean over PPE equipment
Sir Keir Starmer urged the Prime Minister to "come clean" on how much money had been wasted on unusable PPE equipment.
He said: "For weeks I've raised concern about the Government spraying taxpayers' money on contracts that don't deliver.
"The problem is even worse than we thought. This week, a Cabinet Office response suggests that the Government purchased not 50 million unusable items of protective equipment, but 180 million.
"And a new report this morning by the National Audit Office identifies a further set of orders totalling £214 million for face masks for the NHS that it can't use.
"So will the Prime Minister come clean - how many hundreds of millions of pounds of taxpayers' money has been wasted on equipment that can't be used?"
Mr Johnson responded: "Actually, 99.5 percent of the PPE, the 32 billion items of PPE that this country has secured, conformed entirely to our clinical needs once we checked it."
12.07pm update: Keir takes aim again
The Labour leader asks how it came to be that the Health Secretary appointed a friend to a key role.
The friend, Mr Starmer said, is also a lobbyist.
Mr Starmer said: "Was the PM aware of this conflict of interest?"
Mr Johnson said: "He just seems to be attacking the Government for shifting heaven and earth, as we did... to get what we needed.
"It underlines a deep-lying Labour hatred of the private sector."
Mr Starmer said: "Nobody's knocking the private sector, the Prime Minister is knocking the taxpayer!"
He concluded: "It's the same stroy. One rule for the public, another for the Prime Minister and his friends."
Keir Starmer has lashed out at Boris Johnson
12.05pm update: Boris under pressure over 'serial leaker'
The Labour leader accuses the PM of overseeing a climate of "serial leaking" which causes anxiety for Britons worried about is coming next.
He asked the PM whether he has figured out who is leaking information?
He said: "Over the summer, we saw repeated leaks about which areas would go into restrictions. The Prime Minister's plans to go into a second national lockdown were leaked all over the national papers, resulting in a truly chaotic press conference and we've seen more leaking in the last 24 hours.
"This serial leaking is causing huge anxiety to millions of people about what's going to happen next. Now I know there's supposed to be an inquiry under way, but can the Prime Minister tell us: is he any closer to working who in his Government is leaking this vital information?"
The PM said he does not and accused Mr Starmer of "concentrating on trivia" and instead should focus on supporting the Government in their efforts to beat coronavirus.
Mr Johnson responded: "Mr Speaker, I've already told you that as soon as we have any information about anybody leaking, we'll bring it to the House.
"But I may say, I think (Sir Keir) is really concentrating on trivia when what the people of this country want is to see his support, and the support of politicians across the House, for the tough measures that we're putting in to defeat coronavirus."
Following a bizarre back and forth between the PM and the Speaker of the House of Commons, Mr Starmer returned to his original point.
He said: "He has no idea who is leaking information!"
12.03pm update: Keir quizzes Boris over Priti Patel 'bullying' scandal
Keir Starmer has asked the PM to comment on bullying and harassment in the Houses of Parliament.
He asks what message it sends that Priti Patel remains Home Secretary despite a bullying investigation, saying: "What message does the Prime Minister think it sends that the independent advisor on standards has resigned but the Home Secretary is still in post?
"Any other Prime Minister would have sacked the Home Secretary and any other Home Secretary would have resigned."
The PM said: "The Home Secretary has apologised for any way in which her conduct fell short."
Mr Johnson said he would not apologise for sticking by his Home Secretary and defended Ms Patel who is "getting on with delivering the people's priorities".
He replied: "The Home Secretary... Sir Alex's (Sir Alex Allan) decisions are entirely a matter for him, but the Home Secretary has apologised for any way in which her conduct fell short - and frankly I make no apology for sticking up, for standing by a Home Secretary who, as I've said just now, is getting on with delivering the people's priorities.
"Putting already 6,000 of the 20,000 more police out on the street to fight crime, instituting - in the teeth of very considerable resistance - a new Australian-style points-based immigration system.
"She is getting on with delivering what I think the people of this country want, she is showing a steely determination and I think that is probably why his side continue to bash her."
Boris Johnson has appeared from Downing Street via video link
12.02pm update: PM sends Brexit warning to EU
Mr Johnson is asked whether he can confirm all four nations in the UK will leave the EU "as a whole".
He agrees, and says the EU must "accept the reality" that Britain will regain control of its waters.
He told the Tory MP: "Our position on fish hasn't changed, we'll only be able to make progress when the the EU accepts reality we must be able to control access to our waters."
12.01pm update: Boris Johnson is up
The PM revealed it is his last day in isolation after two weeks of staying inside