Missing chef's family in TV plea

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The family of York chef Claudia Lawrence, who has been missing for more than 10 weeks, are to appeal for news of her whereabouts on television.

Crimewatch on BBC One will show a re-enactment of a man and a woman who were seen talking at Melrosegate Bridge on Ms Lawrence's route to work.

The woman had a similar jacket and hair to Ms Lawrence and the man was wearing a hood and smoking.

Her father and sister are among those taking part in the new appeal.

Her sister Ali will tell Crimewatch: "I just find it hard to accept that people just vanish into thin air.

There must be people out there that have seen something suspicious Ali Lawrence, Claudia's sister

"There must be people out there that have seen something suspicious or who know something that's happened."

Her father Peter says: "The hardest thing about all of this is the not knowing.

"It's very unusual, I think, for an adult to disappear without anything being known for this length of time."

Ms Lawrence was last seen near her home in Heworth, York, on 18 March and failed to arrive for her early-morning shift at the University of York's Goodricke College the following day.

The investigation into the disappearance is now the biggest the North Yorkshire force has conducted since the search for multiple killer Mark Hobson five years ago.

Her disappearance is being treated as suspected murder.

Poster appeals have appeared at railway stations across Yorkshire and amateur pilots are to help in the search by watching out for signs of activity around derelict buildings.

Ms Lawrence's father has set up a website, in a fresh effort to find his daughter.

Crimewatch is on BBC One at 2100 BST on Tuesday.