The McLaren Mercedes team will continue to fight for the victory in the Japanese Grand Prix next weekend, despite the Formula One world championship now being effectively over, according to team principal Martin Whitmarsh.

Narain Karthikeyan will get another FP1 cameo at the Japanese Grand Prix weekend in Suzuka, the HRT team confirmed on Friday, as the Indian driver gears up for his 'competitive' return to F1 at his hoem grand prix next month.

The Mercedes GP team have confirmed a pair of deals for technical personnel deemed too rubbish to work at rival teams earlier this year, with the team hiring ex-Ferrari man Aldo Costa and former HRT designer Geoff Willis.

Mercedes GP team boss Ross Brawn has said that the Resource Restriction Agreement between F1 teams has to be strong enough to prevent any "accusations and innuendo" around the manner in which teams abide by the restrictions.

Renault team boss Eric Boullier has insisted that the October deadline for Robert Kubica to prove his fitness for the 2012 Formula One season is final, saying that the team had to have a timetable for planning their 2012 line-up.

Dietrich Mateschitz, head of the Red Bull company, says that they have no plans to sell their second Formula One team in the near future, despite reports suggesting that the team could be bought by Abu Dhabi-based investors.

Force India boss Vijay Mallya has reiterated that he is not planning to make any early decision on his 2012 driver line-up, as the team's three contracted drivers continue to squabble over two seats for next year's Formula One season.

Renault technical chief James Allison says that the team will be aiming to be "credible" over the final five races of 2011, despite their wretched form at the Singapore GP, whilst admitting that the team's forward-facing exhausts had been a flop.

Red Bull team boss Christian Horner has insisted that Mark Webber is being "undervalued" in Formula One at the moment, despite the Australian's 2011 fortunes racking up poorly against dominant team mate Sebastian Vettel.

According to team boss Christian Horner, the Red Bull team made a £2.8 million pre-tax profit in their championship-winning 2010 Formula One season, as the fruits of the caffeine conglomerates labours began to pay them back.

McLaren driver Lewis Hamilton has said that he still has "a lot of respect" for Ferrari's Felipe Massa, despite the duo's angry end to the Singapore Grand Prix weekend, when the Brazilian confronted the British driver after the race.

Robert Kubica's manager has said that the injured Polish driver "is coming back" to Formula One for the 2012 season, despite Renault setting a deadline of next month for Kubica to prove that he will be fit enough to drive next year.

Despite assurances from Indian GP organisers that apparent tax issues concerning the inaugural F1 race in the country would be cleared up, concerns reportedly remain over the details of drivers and teams entering the country.

Ferrari driver Felipe Massa has said that he now considers the incident with Lewis Hamilton at the Singapore GP a "closed" case, though the Brazilian has insisted that he has not changed his opinion on the situation since the race.

The Red Bull Racing squad still want the sport to modify the current set of rules governing race weekend curfews, in order to prevent a repeat of the series of minor mix-ups that plagued the Singapore Grand Prix last weekend.