Jenson Button has admitted he was "misguided" in his attempts to switch to Williams for next season.
The 24-year-old declared his intention to leave BAR in August but team boss David Richards prevented the move on legal grounds.
Button, who is now testing for BAR for 2005, told the Guardian: "Yes, I did make some mistakes.
"In my reasoning for moving I don't think I made a mistake, but in not talking to David I was misguided."
Button revealed one of the reasons he was seeking a move was because of the fear that engine manufacturer Honda
would sever its ties with BAR.
But the Japanese firm now holds a 45%
stake in the team and the Briton is upbeat for the future.
"Honda having a stake in the team is the best thing for BAR," Button said.
"It's huge for everyone working here. It makes us very excited about the