Top Formula 3 teams Carlin Motorsport and Saulnier Racing have committed to joining the Spanish-based Dallara Nissan World Series for next year
The series organiser RPM Racing has opened up the entry from 10 teams to 12 for 2003 to make room for the squads.
Team boss Trevor Carlin said: "I'm glad they've announced it. We knew because anyone interested had to put in a deposit with their entry that would go toward the car if they were successful. They told us recently that we wouldn't be getting our deposit back."
Both teams will continue to run in F3 too, Carlin in the British championship and Saulnier in the new European series.
"It'll be a completely separate team and I've got staff lined up, but we won't be getting the cars until January," said Carlin. "In terms of drivers I didn't want to do anything until it was all confirmed."
Carlin, which dominated F3 with Takuma Sato last year, will become the first British team to enter the Dallara-Nissan series.
Saulnier's decision to enter means that the French outfit will not bid for a place in the new Renault V6 Eurocup, which had been discussed.
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