Foul-mouthed: Jeremy Clarkson (pictured last night) told guests at The Roundhouse Gala in north London that his bosses were 'f****** b*******' Jeremy Clarkson last night launched an extraordinary foul-mouthed rant at BBC bosses during a charity gala. The Top Gear star,  speaking in north London to raise money to help disadvantaged youths, said that he wanted to do one more lap of the show's track 'before the 'f****** b******* sack me'. Clarkson - whom the BBC has suspended over claims he punched a producer - told guests at The Roundhouse Gala that the driving series 'was a great show and they've f***** it up'. A video of his speech emerged as it was claimed last night that Clarkson visited his producer's home to apologise for their Top Gear altercation - but was given the cold shoulder. In footage obtained by the Daily Mirror, he spoke to the Roundhouse audience about a charity auction for his 'last ever lap' on the Top Gear track - which later went for £100,000. Clarkson said: 'I didn't foresee my sacking, but I would like to do one last lap. So I'll go down to Surrey and I'll do one last lap of that track before the f****** b******* sack me. 'I'll be a bit tearful when I do it, but f*** it, let's do it. And I'll drive somebody around in whatever I can get hold of. I'm sacked so it's probably an Austin Maestro.' He added: 'There was an 18-year waiting list to be in the audience of Top Gear, but the BBC has f***** themselves.' Last night, a report claimed that the BBC probe into the row had been told producer Oisin Tymon refused to even open the door to Clarkson after he turned up at his house. Sources said the incident happened four days after 54-year-old Clarkson allegedly punched Mr Tymon during an argument after filming over a hot meal at a North Yorkshire hotel. The claims emerged as it was revealed Clarkson and his co-presenters Richard Hammond and James May are still scheduled to host a Top Gear Live arena show in Norway next week. Rant: Clarkson speaks on stage, next to Pink Floyd's Nick Mason, during The Roundhouse Gala last night . Support: This evening Clarkson thanked all the people who have called for him to remain as presenter . The top-rating show was pulled off air and Clarkson was suspended while an inquiry was launched. It has also been claimed that Clarkson has sent at least one apologetic email to Mr Tymon. Ken MacQuarrie, the BBC executive in charge of the inquiry, has reportedly been shown the contents of the emails. A source told the Daily Mirror: 'In the hours before he reported the matter to the BBC, Clarkson seemed increasingly desperate to apologise to Oisin and persuade him to let the matter blow over. 'When he arrived on the doorstep that Sunday, Oisin was not feeling ready to face him so didn't answer. He just didn't want to speak to him after what happened. Bids: Clarkson (centre), sitting next to journalist Christa D'Souza (left) and Nettie Mason (right) - wife of Pink Floyd's Nick Mason - during the live auction at the gala, to raise money to help disadvantaged youths . Guests: Clarkson (left) with Sally and Ronnie Wood (right) at The Roundhouse Gala in north London last night . 'Clarkson could be heard saying that he just wanted to talk. He was asking for the door to be opened but it didn't work. He tried for up to five minutes but in the end had to walk away.' Today, the BBC was given another reminder of the strength of support behind Clarkson when a million-strong petition calling for his reinstatement was delivered to its headquarters - by tank. The vehicle, apparently driven by the motoring show's enigmatic professional driver The Stig, made its way from Westminster, through central London and towards New Broadcasting House near Oxford Street. Fans were pictured rallying to support the delivery of the Change.org petition, started by political website Guido Fawkes. The petition, launched last week, reads: 'We the undersigned petition the BBC to reinstate Jeremy Clarkson. Freedom to fracas. #BringBackClarkson'.' Although Top Gear is now off air, tickets are still on sale for the four performances of the live show in Norway, next Friday and Saturday. Up to 5,000 people are expected to attend each one. Claim: The BBC investigation into the row has been told producer Oisin Tymon (right) refused to even open the door to presenter Jeremy Clarkson (left) after he turned up at his home, according to a report . Petition is delivered: A man dressed as The Stig is pictured leading a tank charge to the BBC offices in London today to hand over one million signatures to bring back Jeremy Clarkson . City route: The vehicle made its way from Westminster, through central London and towards New Broadcasting House near Oxford Street . Meanwhile, it was also revealed last night that Clarkson's future on the BBC is likely to be decided next week when the corporation's internal probe into his behaviour is given to the director-general. A BBC Worldwide source told The Daily Telegraph: 'At the moment we are taking things on a day by day basis and as things stand the [Norway] shows are scheduled to run as billed. 'It is not happening tomorrow, it is happening in eight days' time, so we are waiting to see what the investigation delivers. 'No-one is really sure about the timing of the investigation's decision, so before we disappoint 20,000 fans in Norway, at the moment we are going ahead with the show.' Clarkson has been suspended since it emerged he was involved in what the BBC called 'a fracas' with one of the show's producers. It was reported this week that Clarkson's Top Gear co-hosts declined an offer to continue the rest of the series without him. The last episodes of the series have been postponed, causing the BBC to lose millions of viewers and receive thousands of complaints. Hosts: Although Top Gear has been taken off air, Clarkson and his co-presenters Richard Hammond (left) and James May (right) are still scheduled to host a Top Gear Live arena show in Norway next week .
Clarkson says Top Gear 'was a great show and they've f***** it up'
Was speaking in London to raise money to help disadvantaged youths . Says there was '18-year audience waiting list but BBC has f***** itself'
Producer Oisin Tymon 'would not open door' to Clarkson at his house . It happened four days after Clarkson, 54, allegedly punched Mr Tymon . It was during argument after filming over hot meal at a Yorkshire hotel . Clarkson is scheduled to host Top Gear Live show in Norway next week . Meanwhile petition calling for his reinstatement was delivered to BBC HQ today in a tank driven by The Stig .