The producers of the new James Bond film have refused to confirm reports Madonna will sing the theme tune.
Barbara Broccoli says the Madonna link-up remains "a possibility".
A spokeswoman for the singer has already said Madonna will record a song for the film.
Broccoli says the Bond team are not worried about going head to head with the second Harry Potter movie.
Bond 20 is expected to be released at about the same time as Harry Potter And The Chamber Of Secrets.
Barbara Broccoli says having two major British movies out at the same time is good new for the film business.
"We're proud of ours being a British film and there are so many other great British films out there that are so well regarded," she said.