Formula one is worth about $8 or $9 billion, as the sport’s owner CVC confirmed it has this week sold a 21 per cent stake to new investors.

News of the sale coincided with the launch of pre-marketing ahead of one of the biggest ever sports floatations, data by the financial experts Thomson Reuters shows.

“It’s cheap compared to Facebook,” chief executive Bernie Ecclestone told reporters on Tuesday, confirming that the Singapore IPO looks set to go ahead soon “with no dramas”.

“All the things that have to happen have happened. It will be finished by the end of June,” the 81-year-old is quoted by the Telegraph.

F1′s new one-fifth owners are US managers Waddell and Reed, the powerful Blackrock and Norway’s central bank Norges.

“It’s a great way to start the IPO and lets investors know what they can expect,” said Ecclestone.

The diminutive Briton said he is keeping his 5.3 per cent stake, and staying in charge. His former wife Slavica controls another 8.5pc, the news agency Bloomberg said.

“You might as well have asked Frank Sinatra who he would appoint to replace him,” Ecclestone insisted.

CVC said in a statement that is remains F1′s biggest and controlling shareholder.

Felipe Massa has played down reports he is at risk of losing his Ferrari seat soon, insisting he feels fully supported by Ferrari.

The Brazilian has struggled at the wheel of Ferrari’s difficult 2012 car so far, scoring just 2 points compared with his teammate and joint championship leader Fernando Alonso’s 61.

It has triggered speculation the Maranello based team might replace him, also because Ferrari said after Barcelona it is “expecting” Massa to improve “right away”.

Whilst working at Maranello in the driver simulator on Friday, however, Massa insisted he has not been far away from Alonso at recent races.

“I think we must also take into account that, at the moment, Fernando’s driving is amazing: he is on super form, maybe even perfect,” he is quoted as saying in a Ferrari statement.

Asked if he feels the famous Italian team’s support, he added: “Absolutely, yes, I feel the whole team stands by me.

“Obviously, they are not happy with the results and neither am I: we all want to get out of this (situation) and return to normal.

“It’s possible and for sure it’s what I want and I know that with the team’s help we will manage it,” said Massa.

Ferrari has played down rumours it is close to immediately ousting Felipe Massa, insisting it is possible the struggling Brazilian will still be in a red car next year.

On Twitter, the famous Italian team said the latest rumours – including a claim that former Virgin driver Jerome d’Ambrosio is a candidate to replace Massa in 2012 – are “funny”.

But it was Ferrari itself who fuelled the speculation, publishing a statement on its website that read like a warning to Massa.

“It was a very carefully-worded statement, wasn’t it?” said Telegraph correspondent Tom Cary.

“The way this crazy season is going, I really would not be massively shocked if they ditched him mid-season.”

The Swiss newspaper Blick said Monaco next weekend could be the 30-year-old’s last chance to up his game.

And the candidates are lining up.

“Ferrari knows that I’m ready. If they need me or they want me, then they will call me,” Adrian Sutil, who accompanied his manager to last weekend’s Spanish grand prix, said.

The Spanish newspaper El Mundo said some paddock pundits believe “the only reason” Massa still has its seat is because the “name Todt” – a reference not only to Massa’s manager Nicolas but to the FIA president – has a “protective arm” around him.

Ferrari spokesman Luca Colajanni told Brazil’s O Estado de S.Paulo newspaper this week: “Felipe has the full confidence of the team, starting with our president.

“We have not decided who will be our driver in 2013 but Felipe is not ruled out,” he insisted.

Indeed, while some believe Ferrari has hung a sword of Damocles above Massa’s head, others think the Maranello based team have been patient since the Paulista’s recovery from his near-fatal head injuries of 2009.

“We have no evidence that makes us think that Felipe has slowed down because of the accident. Zero,” Colajanni said.

F1 doctor Gary Hartstein agreed: “An experience like that (Hungary 2009) changes you, but you can’t say that’s why Felipe has not won again.”

Felipe Massa’s formula one career is on the brink of collapse.

Ferrari boss Stefano Domenicali left Barcelona insisting he expects the struggling Brazilian to “fight back starting in Monaco”.

“We absolutely need his points to also fight for the constructors’ title,” he said.

Earlier, the Maranello based team said on Twitter that Ferrari is “disappointed with” the 30-year-old’s performance.

When asked about that comment, a Ferrari spokesman told the Sunday Times: “It was a poor choice of grammar. We are disappointed in the outcome of Felipe but not with Felipe himself.”

But the very latest development is that Ferrari is now making it abundantly clear that Massa needs to up his game immediately.

In a statement posted on its official website, Ferrari said Massa’s teammate Fernando Alonso “has always maintained a very high level”.

As for Massa, his “drop off has made itself felt”, the report stated.

“The Brazilian had picked up 49 points two years ago and 24 the following year, while so far this season he has just 2,” said Ferrari.

“Everyone, he more than anyone, is expecting a change of gear starting right away with the Monaco grand prix”, the statement concluded.

Even Massa’s strongest supporters in Brazil, like the O Globo journalist Celso Itibere, admit the situation is dire.

“He is at risk,” said Itibere, “his decline is progressive, he is failing to react and he runs the real risk of not finishing the season.

“At this time Ferrari has no one to take the job. Everyone they would like to have there – Perez, Kobayashi, Webber – are not available.”

Tuesday’s edition of the Italian sports daily Corriere dello Sport will report that Massa’s ousting is imminent.

And the latest edition of La Gazzetta dello Sport did not even once mention Massa’s name. “It is as though he does not exist,” wrote the Brazilian journalist Livio Oricchio in O Estado de S.Paulo newspaper.

“Yet it is an Italian newspaper, and he is a Ferrari driver.”

When asked if he fears for his F1 career, Massa said in Barcelona last weekend: “No. I live in the present. What will happen will happen.”

Asked if he is afraid another bad performance will seal his fate, Massa insisted: “I’m not afraid of anything, especially criticism. It doesn’t affect me.”

Two days after winning in Spain, Williams is scrambling to put together the equipment it needs to contest next weekend’s Monaco grand prix.

Mere hours after Pastor Maldonado secured the once-great British team’s first victory since 2004, a huge fire broke out in the pits, leaving one team member still in a Barcelona hospital with burns.

“His family are in constant communication and he is in good spirits,” Williams said in a media statement.

The Oxfordshire based team is now making efforts to ensure it can race in Monte Carlo, having lost a lot of equipment in the fire.

Mercifully, however, Bruno Senna’s car appears to have survived, with the Finnish broadcaster MTV3 saying an initial inspection of the chassis showed no devastating damage.

Maldonado’s winning car was in parc ferme at the time of the incident.

“We had a lot of damage and lost a lot of equipment, including IT equipment,” chief operations engineer Mark Gillan said, according to the Daily Mail.

“Over the next couple of days we will be looking at where we are parts-wise.

“We will have everything we need to run operationally at Monaco, but we may be missing a few of the extras because obviously we don’t carry a complete set of spares for everything,” he said.

It is believed more than one rival team has offered to help Williams by loaning the Sir Frank Williams-led outfit any equipment it needs.

A McLaren spokesman confirmed the Woking based team has offered to help.

Germany’s Bild newspaper said Williams’ damage bill runs into the millions.

Team manager Dickie Stanford denied a rumour the fire was caused by a cigarette in the vicinity of Senna’s fuel tank while it was being emptied.

“We don’t know the cause, but we would never allow smoking in the pits,” he insisted.

Williams and F1′s governing FIA are investigating.

Rumours that a top English premier league football club is entering formula one as a sponsor have proved correct.

Ever since Sauber has been running teaser ‘Out of the blue’ and ‘True blue’ graphics on its engine cover livery in China and Bahrain, speculation about the identity of the forthcoming sponsor have been swirling in the F1 paddock.

We reported the rumour that the deal could be with the Russian billionaire Roman Abramovich, to promote his football club Chelsea.

Swiss F1 team Sauber confirmed the “new and innovative partnership” on Monday.

“The C31 sporting the blue logo of Chelsea FC will be seen for the first time at the Spanish grand prix,” the Hinwil based team announced in a media statement.

“A partnership like this between formula one and football has never existed before in this form, yet there are numerous commonalities and possible synergies,” said Sauber chief executive Monisha Kaltenborn.

The statement said Chelsea will in turn display Sauber’s logo on its advertising boards and interview walls, ensuring one another “a significant market presence outside their original sport”.

Tyres. The political dramas aside, that word utterly dominated the Bahrain grand prix weekend.

Afterwards, Michael Schumacher admitted he was “unhappy” with the situation.

“Sometimes we are driving only 60, 70 per cent through the corners,” he is quoted by Bild newspaper.

Pirelli did not take the criticism lightly, insisting it has made Canada 2010-style, heavily degrading tyres to order, for the benefit of the ‘show’.

Motor sport director Paul Hembery on Monday ‘re-Tweeted’ a message from a follower accusing the seven time world champion of having thrown “his toys out of the pram”.

Moreover, Pirelli said Bahrain is perhaps “the most demanding” on the entire calendar when it comes to degradation.

“As a result, knowing how to manage the tyres and contain thermal degradation was a vital skill” on Sunday, the Italian marque said in a statement.

On Twitter, The Times’ correspondent Kevin Eason called Bahrain an “excellent race, although I am not sure we haven’t moved from tyre management to lottery”.

The roulette wheel didn’t spin up for McLaren – the team with arguably the best overall car so far in 2012 – on Sunday.

“Nobody has added a second to their cars in just a week after China,” lamented Jenson Button, “but here we were a second off the pace.”

His boss Martin Whitmarsh told Auto Motor und Sport: “Maybe it was the pressures, maybe the temperatures. We really don’t know.”

The German reporter said Whitmarsh’s comment indicates an “uncomfortable realisation” for such a scientifically meticulous team.

Whitmarsh agreed: “It is now more important to understand the tyres than to find a bit more downforce.”

The tyre marque’s test driver Jaime Alguersuari told Mundo Deportivo newspaper that Pirelli deserves credit, not criticism.

“Pirelli is largely responsible for making F1 the most spectacular it has been in a decade,” said the young Spaniard.

Internet hackers have threatened to wreak havoc as they sided against formula one over the sport’s decision to push ahead with the highly controversial Bahrain grand prix.

The well-known ‘hacktivists’ Anonymous brought down F1′s official website on Friday, slamming Bernie Ecclestone as “evil” and threatening the “worst sh**storm” if the track action continues to proceed this weekend in the troubled island Kingdom.

“Attacks on their (the teams’) computer servers could prevent the race taking place,” the Daily Express newspaper speculated.

Anonymous also took control of another specialist website, posting a statement that accused the sport of supporting the Bahrain government despite the country’s “human rights situation” and saying F1 will now “be punished”.

In an awkward official press conference on Friday, team bosses continued to support the sport’s decision to press ahead with the race.

“Ultimately we’re a race team,” said McLaren and FOTA’s Martin Whitmarsh. “We’re here to go motor racing and that’s our number one priority.”

Force India deputy boss Bob Fernley has dismissed reports the Silverstone based team could pull out of the controversial Bahrain grand prix.

Two members of the team were allowed to return to Europe this week following a Molotov cocktail attack en route from the Sakhir circuit to the hotel.

There were high-level meetings involving Force India on Thursday, sparking speculation the entire team could follow its frightened members back to the UK.

But Fernley, admitting that security has been ramped up after the incident, is quoted by Express newspaper: “We are definitely taking part, that is decided.”

Bahrain’s information affairs authority also released a statement featuring quotes by Bernie Ecclestone.

“I have no knowledge of any teams planning to withdraw from the race and we are all looking forward to racing in Bahrain,” the F1 chief executive said.

According to Telegraph correspondent Tom Cary, however, another incident like the one involving Force India this week could force F1 to change its decision to go ahead with the race.

“If that happened again and someone was injured then that’s the nightmare scenario for organisers as it might push the teams over the edge,” he said.

Many drivers, like Kimi Raikkonen, have said the situation is normal this weekend in Bahrain, but Cary does not agree.

“Normally there would be PR events in town, you know, ‘meet the fans’ and that sort of thing but certainly as far as I’m aware there aren’t any of those happening,” he said.

World champion Sebastian Vettel said he will be happy when track action begins on Friday.

“I think it’s not a big problem,” the German said when asked about the security situation this weekend, “and I’m happy once we start testing tomorrow because then we worry about the stuff that really matters — tyre temperatures, cars.”

Earlier, Vitaly Petrov’s manager indicated the Russian would only travel to Bahrain if F1 could guarantee his safety.

“If it was dangerous they wouldn’t let us in,” the Caterham driver told The National in Bahrain.

“If they make sure nothing gets thrown onto that track to hurt us, then we’ll be fine. We are here; if it happens, it happens,” added Petrov.

In fact, almost everyone in Bahrain has been reluctant to comment in detail, but there is an obvious feeling of unease.

Peter Sauber told Blick newspaper: “I feel like a guest, and so it is not polite to criticise your host.”

But 1996 world champion Damon Hill allowed himself some criticism of F1, including the sport’s most powerful figures, Bernie Ecclestone and Jean Todt.

He pointed out that FIA president Todt has said “next to nothing” about the Bahrain saga.

“This I find baffling,” Hill wrote in the Guardian. “Surely it is possible to condemn acts of inhumanity without taking a side?”

As for F1 chief executive Ecclestone, who has consistently trivialised the Bahrain issue, Hill noted that “few” in the paddock “dare to publicly disagree” with the imperious 81-year-old.

“Perhaps we should (criticise him), instead of just muttering under our breath, scared of losing our passes,” said Hill.

Hermann Tilke, the German architect who designed the Sakhir circuit, sees the entire saga as a storm in a teacup.

“It is safe in Bahrain,” Tilke, whose company has an office there, told the Kolner Express newspaper. “I’ve never heard about any problems from our people.

“Of course there is some unrest, but it is protests, not civil war. As Bernie Ecclestone has said, we do sports, not politics,” he insisted.

“And if they demonstrate peacefully now, the media will report on it, so both sides benefit.”

Bahrain protesters have stepped up their anti-grand prix campaign, with formula one vowing to push ahead with a race in the troubled island Kingdom next week.

After the FIA declared that the race is definitely going ahead, Bernie Ecclestone on Friday met with team bosses in the Shanghai paddock.

“There’s nothing (bad) happening. I know people who live there and it’s all very quiet and peaceful,” the F1 chief executive insisted.

Media reports, however, suggest otherwise.

Photos have emerged of protesters burning flags depicting Ecclestone’s face, whilst others marched in F1 overalls and helmets, carrying machine guns.

Anti-F1 graffiti, meanwhile, is sprayed on walls throughout the capital Manama.

Ecclestone, however, told the BBC late on Friday that the Bahrain protesters are “not protesting about formula one”.

So with the race still scheduled, are the teams feeling comfortable?

“All the teams are happy to be there,” insisted Ecclestone.

Commented Red Bull’s Christian Horner after the meeting with the F1 chief executive: “The FIA have obviously done their research and come out with a clear statement that as a team entered into the championship we respect.

“We’ll do our best to ensure that all our guys and girls are in a secure environment, but I don’t doubt that for a moment.”

With F1 currently scheduled to arrive en masse in Bahrain next week, a crisis surrounding the possible cancellation of the island Kingdom’s race is continuing to deepen.

The teams have now denied Bernie Ecclestone’s claim that they can simply choose to skip the event.

“That would not be possible,” said a statement issued by the teams association FOTA. “Teams are unable to cancel (a) grand prix.”

Bahrain, meanwhile, stepped up its campaign, accusing some of deploying “scare-mongering tactics” designed to force the race’s cancellation.

The race organisers released a report conducted by Lotus, following the Enstone based team’s recent reconnaissance mission to Bahrain.

“We came away from Bahrain feeling a lot more confident that everything is in hand,” Lotus is quoted as having reported.

The team, however, reacted angrily, accusing the organisers of having released a “confidential” document.

“Lotus F1 Team is one of 12 contestants of the … world championship and we would never try to substitute ourselves for the FIA”, said the Enstone based team.

Surmised Times correspondent Kevin Eason on Twitter: “(It’s) getting messy…”

At the same time, F1 chief executive Ecclestone became fully immersed in the political situation on Tuesday, reporteding personally phoning Bahrain’s crown prince to express concern about the jailed hunger striker.

An Amnesty International report published this week had called for Abdulhadi Al-Khawaja’s release, amid claims he is now close to death and being force-fed.

But the Bahrain government, through its information affairs authority, insisted that only police and rioters are being injured in “infrequent and remote clashes”.

Also weighing into the argument was Sir Jackie Stewart, the eloquent triple world champion, who said: “I would go.

“The commercial rights holder has sold a package, at a price, and it is part of the constructors’ agreement that they attend the races that have been published,” he told the Guardian.

“As a team owner I would have to honour my agreement both orally and legally.”

Whatever happens, the Bahrain saga – stretching back now over a year – is not good news for the future of the island Kingdom’s calendar spot.

“Maybe we wouldn’t renew it (the contract),” Ecclestone admitted to the BBC. “We’ll have to look and see.”

Now less than three weeks before the island kingdom is scheduled to host its return to formula one, bitter protests and violence have once again erupted in Bahrain.

Witnesses claim a 22-year-old man who was filming the firing of tear gas on protesters was shot and killed by state-supporting militia on Friday.

The death – reportedly the first since last year’s troubles forced the cancellation of the 2011 race and test – intensified the clashes and calls for the forthcoming grand prix to be axed.

The government has denied it is responsible for the death.

“The ministry of interior will do all it can to find the criminal and bring him to justice,” a spokesman is quoted as saying by the Times of London.

The ministry also confirmed that Nabeel Rajab, the president of the Bahrain Centre for Human Rights, has been arrested.

He had said last week: “We are going to use the opportunities that a lot of journalists are there (for the grand prix) and we are going to protest everywhere.”

The protests, however, continued.

“We (object to) holding a sports race that belittles the sacrifices of our children and ignores our suffering and wounds,” said a video statement posted on the internet by a protester.

“Do not tarnish the reputation of the respected auto sport with the blood of Bahrain victims.”

And on Twitter, the hashtags #BloodyF1 and #noF1 are being used to protest against the race and link to graphic photos and videos purporting to depict government violence.

Ferrari’s new deal for the 2013 Concorde Agreement reportedly involves a $50 million annual fee.

It is believed the Italian team has now finalised its commercial agreement with Bernie Ecclestone.

The same is reportedly true for fellow top teams McLaren and Red Bull, whose annual additional fee is, according to German newsmagazine Der Spiegel, $35m apiece.

Ecclestone wanted to announce the conclusion of successful Concorde Agreement negotiations in Malaysia, but major teams including Mercedes and Williams were yet to sign up.

Instead, the F1 chief executive released a statement saying deals have been done with ‘the majority’ of the teams.

Mercedes, in particular, is more than unhappy.

“It can not be,” a Daimler insider is quoted as saying, “that transparency from our business partners is lacking regarding a contract through 2020.”

The FIA has dismissed the latest rumours about next month’s Bahrain grand prix.

Some publications this week said F1′s governing body was in the process of drafting a statement announcing that the Sakhir race has been cancelled due to security concerns.

But the FIA’s director of communications Norman Howell angrily denied those reports.

At the same time, Sheikh Abdullah bin Isa al-Khalifa, Bahrain’s motor racing federation chief and also an FIA world council member, admitted he could not guarantee the safety of F1′s travelling personnel next month.

“There are no guarantees in this world,” he is quoted by PA Sport, after admitting “disturbances” in Bahrain are still taking place.

“You could be (in danger) anywhere, even Silverstone.

“All I can guarantee you is you will be as safe as at any other grand prix.”

Asked if there will be extra security measures in place, Khalifa answered: “No, absolutely not. It will be life as normal.

“We’ve never had any violence towards foreigners simply because they are foreigners or in F1.”

F1 industry monitor Formula Money has found that the Bahrain grand prix is more commercially successful for teams and trackside advertisers even than Monaco, Spa and Monza.

The publication also said that if the 2012 race is cancelled, “the teams could lose $44.7m of prize money”.

Amid speculation regarding Felipe Massa’s immediate future, Sergio Perez’s father has revealed that Ferrari approached Sauber.

Earlier, Sauber driver Perez played down the rumours about Massa’s future, including the suggestion he was at the very top of Ferrari’s replacement list.

“Sergio is focused one hundred per cent on (performing in) Malaysia,” the 22-year-old Mexican’s father Antonio is quoted by the Spanish-language Medio Tiempo.

Perez snr’s son is the cream of Ferrari’s development driver ‘academy’ programme.

“Since last year, Ferrari has had three drivers: Alonso, Massa and Perez,” he said.

“‘Checo’ has a great relationship with the team but I can say today that Perez is signed only with Peter Sauber.”

Nonetheless, it has been suggested Ferrari made an approach to Sauber recently, amid Massa’s performance slump.

“Yes, Monisha (Kaltenborn), who is the chief executive of Sauber, confirmed that Ferrari people approached her to talk about Sergio,” said his father Antonio.

At the very least, Perez is a candidate for Massa’s seat next year.

“That would be a good package,” the Mexican answered when asked about the potential pairing of his son with Fernando Alonso.

“I see it only as a matter of time. We have to wait and be patient rather than distract Checo from what he is doing now.

“Sergio was not even aware of the statements made by Ferrari: he was training and focused on his fitness,” added Perez snr.

Luca di Montezemolo, Ferrari’s president, urged calm over the famous team’s current situation, including the calls for Massa’s scalp.

“I understand that the fans are disappointed,” he is quoted by Stuttgarter Nachrichten newspaper, “but I ask them to remain calm.

“We must remain calm and focused.”

Still, the rumour mill waits for nobody, and even Ferrari’s official ‘Tweet’ about the “reasonable job” done by Massa on Saturday did not go unnoticed.

“I take that to mean, ‘You’re useless!’ German RTL commentator Christian Danner joked.