If you missed tonight's Question Time then you have quite a lot to catch-up on, but here's the six key things to take away from tonight's discussion.

1 – Jeremy Corbyn would remain 'neutral' in a second Brexit referendum

Corbyn faced a lot of questions about his stance on Brexit, and even though his answers didn't provide a perfectly clear response, he did confirm that he would remain neutral in a second referendum.

Although he has previously implied that this would be his stance, this is the first time he has explicitly stated his position.

2 - Boris Johnson refused to apologise for offensive language in his journalism

After the Prime Minister was asked whether he would say the words "I'm sorry" for contributing to race hate through his journalistic work, the Conservative leader made every attempt to dodge the call to apologise.

He claimed this was a reference to his article last year describing Muslim women wearing the burqa as looking like "letterboxes".

He also said if you went through all of his articles with a fine toothed comb you would be able to find things that may seem offensive.

Fiona Bruce reminded Johnson that there were several articles that people had taken offence to, including ones that referenced "bum boys" and black people in Africa having "watermelon smiles".

The leader claimed that his burqa article made a "liberal case" for women being allowed to wear what they want.

3 - Jo Swinson was undoubtedly the least popular contributor of the evening

Swinson faced a difficult room right from the get-go, with her first, brutal, question asking "Do you regret saying you could be prime minister?".

Things did not get any easier for the Lib Dem leader, as she faced scrutiny about her voting history, backlash from the party's Brexit stance from both leave and remain voters, and the disastrous betrayal felt by Lib Dem voters after the party's 2010 coalition with David Cameron.

Awkward silences, audience members demanding answers, and a fierce reminder that her voting record doesn't match the party's current policies all made Swinson experience a very awkward half-hour.

4 - Nicola Sturgeon confirmed that she would expect Corbyn to agree to a second independence referendum in return for SNP support

Sturgeon had a very positive appearance tonight, with social media offering a mostly positive response to her responses.

The Scottish First Minister confirmed that if Corbyn wanted the support of her party, he best be prepared to give Scotland a second chance at independence.

The SNP leader's most popular moment of the night undoubtedly came after she asked if she could be "undiplomatic" for a moment – saying that Brexiteers told a lot of lies in the EU referendum and "one of those was on the side of a bus".

5 - Johnson's credibility has suffered following the Tory Twitter handle fiasco

Johnson faced a lot of questions about his credibility and how people could trust him, entering the stage to a question about the importance of telling the truth.

His response received a large laugh from the audience as he said it was very important, and the theme to how trustworthy he was continued throughout the evening.

His credibility wasn't helped by Fiona Bruce having to stop the Prime Minister as he said the Conservatives were building 20 new hospitals, with the host interjecting to correct the figure to six.

One of his final questions, and one that he ran out of time to answer in full, asked how the public could trust Johnson on anything after the CCHQ changed their Twitter handle to FactCheckUK earlier this week.

Johnson claimed that the biggest corrosion of trust came from Parliament's refusal to vote through his Brexit deal.

In the midst of a lot of commotion from the audience, the politician ran out of time, leaving his half-hour slot feeling very chaotic.

6 - The country hasn't seen the last of political jabs over Twitter

It was instantly clear that the parties wouldn't be steering clear of Twitter, with the Conservatives tweeting "Will @jeremycorbyn be able to tell us whether he backs Leave or Remain tonight?"

It wasn't just the Conservatives taking to the social media platform though, as Labour's Press Team tweeted this later in the evening.

All-in-all, these remarks are just the tip of the messy, and childish back and forth we can expect in the run-up to the election on December 12.

The leaders of the four largest parties in the UK each spent 30 minutes answering questions from an audience in Sheffield.

Jeremy Corbyn kicked off the show, followed by Nicola Sturgeon, Jo Swinson, and finally, Boris Johnson.

The full programme is available to watch on BBC iPlayer.