After multiple bombshells during two hours of dramatic testimony Shane Sutton, the Australian former head coach of British Cycling and Team Sky, stormed out of a medical tribunal on Tuesday having denied he was a serial liar, a bully and a doper.

Earlier Sutton had accused his former colleague Dr Richard Freeman, who is the defendant in a fit-to-practise case, of being spineless and a drunk whom others in British Cycling wanted dismissed.

Sutton finally boiled over after questions over an order of 30 sachets of the banned substance Testogel, sent to the Manchester velodrome in 2011, which he denied was to treat his alleged erectile dysfunction. “I would have no problem in telling you it was for me. You are telling the press I can’t get a hard on – my wife wants to testify that you are a bloody liar.

“I have never ordered any Testogel and I swear on my three-year-old daughter’s life,” said Sutton, who added that he would take a lie-detector test to prove it.

That was just one wild exchange of many in what turned out to be a damaging day for British Cycling and Team Sky, with the reputation of both organisations and two of its key staff members during their period of unprecedented success put in the dock.

Sutton was at the Medical Practitioners Tribunal Service in Manchester to give evidence on behalf of the General Medical Council in their case against Freeman, who has already accepted 18 of the 22 charges against him. Freeman denies the GMC’s claims that he ordered Testogel in order to microdose an unnamed cyclist and says that the 61-year-old Sutton bullied him into it to treat his erectile dysfunction.

The spotlight quickly turned on to Sutton, a central figure behind British Cycling’s success over several Olympics as well as Bradley Wiggins’s Tour de France victory in 2012, who found his reputation under attack.

Sutton said at one point: “Can I ask, ‘Am I the one who is on trial here?’ I feel like I’m the criminal.”

Freeman’s QC, Mary O’Rourke, said she had been given statements from “individuals that have come forward in the last two weeks saying that you are a liar, a doper and a bully”.

Sutton was then accused of having banned testosterone in his house in Rowley Regis during the late 90s or early 2000s – with O’Rourke claiming that one witness had not only seen it in his fridge, but also watched Sutton inject the testosterone.

“That’s interesting. I want to see the name and hear the evidence,” said Sutton.

“The individual in question wishes to remain anonymous,” replied O’Rourke, “but he has provided his name and details to UK Sport and UK Anti-Doping and to Damian Collins at the Department for Culture, Media and Sport.”

When Sutton named his accuser, who he said was jealous, O’Rourke told him he had got the wrong man.

Later O’Rourke also pointed out to Sutton that he had sent Freeman “some pretty hostile texts” despite calling Freeman a friend.

She then read out one text he had sent Freeman at the end of last year. “Be careful what you say,” it read. “I can drag you in – you won’t be the only person I can hurt.”

O’Rourke also accused Sutton of having a laugh when he said that he had never heard of Testogel until it was reported in the press. “There’s only one joker in the room and that’s you,” Sutton said.

However, when O’Rourke began picking over a statement Sutton had given the GMC last year, which she suggested meant he had assumed there was more than one box of Testogel, he finally boiled over.

“I am going to leave the hearing now,” Sutton said. “I don’t need to be dragged through this shitfight that this individual is trying to bring on me.

“I was asked to come here and answer whether I ordered Testogel. I did not. As far as I am concerned I am going back to my hole in Spain and enjoy my retirement and sleep at night knowing full well I’ve not ordered any patches.”

Sutton then addressed Freeman, who was hidden behind a screen while he was giving evidence because he is considered a vulnerable witness. “The person lying is the man behind the screen and hopefully one day he will explain why,” Sutton said.

“He’s a good bloke, a good friend, I have no argument with him or anyone else. There was no one better bedside. I am happy with what I achieved in my career. I wish Richard all the best.”

Sutton then turned viciously against Freeman. “This is a guy who the joint head of cycling wanted out the door because he turned up drunk on several occasions.

“Richard went through a messy divorce. He was like the Scarlet Pimpernel. I covered his backside while he was there. Two critical cases of athletes ill and we couldn’t get hold of him. If you bring [the former British Cycling head of medicine] Steve Peters in, he would verify it all.

“I haven’t lied. I’m not going to be dragged through this by a mindless individual who is defending someone who has already admitted lying. He’s hiding behind a screen, which is spineless. Richard, you’re a spineless individual.”

After he left the tribunal Sutton said he was unsure whether he would come back to give evidence on Wednesday. He said he had become emotional partly because of a serious family matter involving one of his children.

If he does not return, Freeman’s legal team could ask for Sutton’s evidence to be struck from the record or given less weight.

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The tribunal heard that the Daily Mail had acknowledged a request to give what O’Rourke claims is a secret affidavit from Sutton that is “totally inconsistent” with evidence he had given to a parliamentary inquiry into doping in sport.

O’Rourke has previously claimed that document was in the newspaper’s managing editor’s safe as “an insurance policy against any potential claims for defamation by Sir Bradley Wiggins, Freeman or Sir Dave Brailsford” and that it contained “a number of lies”.

The tribunal continues.