Renault is now officially in F1 only as an engine supplier - to Red Bull, Renault and Team Lotus - and now, through Infiniti, as a sponsor of Red Bull.

BBC: Red Bull get budget boost through Infiniti link-up

But Button emphasised that other teams also had their own new parts to introduce in Spain - among them Red Bull, Toyota, McLaren, Ferrari and Renault, the teams that filled the remaining points positions in Bahrain.

BBC: Button expects close title battle

Furthermore, writs that had been threatened against Ferrari and the other teams in Fota - McLaren, BMW Sauber, Renault, Toyota, Red Bull Racing, Toro Rosso and Brawn GP - are likely to be shelved.

BBC: F1 deal ends threat of breakaway

Governing body, the FIA, decreed that the design was legal - but an appeal is set for 14 April after Renault, Ferrari and Red Bull challenged the decision.

BBC: Red Bull considering new diffuser

The eight Fota teams - McLaren, Ferrari, Red Bull, Brawn, Toro Rosso, Renault and Toyota - released a statement late on Thursday night declaring their intention to quit F1.

BBC: Mosley confident of F1 resolution

Formula 1's governing body and Fota have become embroiled in an increasingly bitter feud over Mosley's presidency and his plans for the 2010 season, which include budgetary and technical changes that have been met with opposition by Ferrari, Brawn GP, McLaren, Red Bull, BMW Sauber, Toyota, Renault and Toro Rosso.

BBC: Mosley hits back at calls to quit

They have signed a deal to combine their Renault engines with Red Bull's gearbox and hydraulics.

BBC: Lotus confirm Renault F1 engine deal

Lotus beefed up their 2011 ambitions by confirming they will be powered by Renault engines next season and will also use Red Bull's gearbox and hydraulics.

BBC: Russian supercar firm Marussia takes over Virgin Racing

Whiting's statement contradicted an announcement by the FIA's world council on 24 June which listed the eight Fota teams - McLaren, Ferrari, Renault, BMW, Toyota, Brawn, Red Bull and Toro Rosso - as confirmed entries.

BBC: F1 breakaway plans still in place

We don't want to be battling with Renault for eighth, we want to be competing with Red Bull and McLaren.

BBC: Ferrari will bounce back, says Fernando Alonso

Mosley upped the ante when he began legal proceedings against Ferrari, McLaren, Renault, BMW Sauber, Toyota, Brawn GP, Red Bull Racing and Toro Rosso on Friday.

CNN: Mosley says deal close in F1 breakaway row

Seven members of the Formula One Teams Association, McLaren, Renault, Toyota, BMW Sauber, Brawn GP, Red Bull Racing and Toro Rosso gave Schumacher and Ferrari the green light.

CNN: Motorsport: Williams block Schu testing bid