The media lawyer Mark Lewis, who represents the family of murdered schoolgirl Milly Dowler, said he and the Dowlers are "cautiously optimistic" about Lord Justice Leveson's report.
He said he hoped that the MPs who signed an open letter opposing the statutory underpinning of the press regulator would look again at the proposal.
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Scientists are researching a blood test which can quickly detect colon, lung, breast, stomach and endometrial cancer.
Transport bosses are said to be in "active discussions" with the company to encourage it to extend its pilot scheme to the UK's capital.
Reports suggest the 67-year-old is expected to be named as one of the hosts of the new series within days.