Lighting told MPs yesterday that Five had been forced to withdraw from bidding for a US show prior to the LA screenings because the BBC had tabled a bid it believed was uncommercial.
She did not name the show to MPs but Five sources have confirmed that she was referring to Good Girls Don't - a new risqué drama from the makers of Third Rock From The Sun and Roseanne.
The BBC announced last week that it had secured the rights to the eight-part series and sources said the corporation had paid £800,000 for it.
Lighting, argued the BBC should withdraw from competing with commercial broadcasters for foreign programmes and movie blockbusters and concentrate instead on supporting original British productions.
Her comments came as part of the media select committee's consultation into the BBC's charter review.