A former Daily Mail showbusiness editor has denied listening to voicemails between actors Jude Law and Sadie Frost Law and said stories she wrote about their relationship came from an "amazing source".

Nicole Lampert said the source was close to Frost and that information had been passed to the newspaper through a "trusted freelance journalist".

Frost told the high court she distrusted friends at the time but now "100%" believes that stories about her were obtained by hacking her voicemails.

The actress is one of seven high-profile claimants accusing the Mail's publisher, Associated Newspapers Limited (ANL), of "grave breaches of privacy" over a 20-year period. ANL has denied wrongdoing.

Frost's claim relates to four articles published between 2003 and 2005 on which Lampert has a byline.