Police are dredging bogs across a Sussex forest in the hunt for missing BBC woman Diane Chenery-Wickens.

On the two-week anniversary of the disappearance of the make-up artist, detectives yesterday confirmed they were treating the case as a murder inquiry.

Search teams continued scouring sections of Ashdown Forest for the body of Mrs Chenery-Wickens or any clues that could point them to where she is.

And officers yesterday began wading through deep bogs on the edge of the forest for evidence.

Mrs Chenery-Wickens, 48, from Duddleswell, near Crowborough, vanished on January 24.

Her husband, 51-year-old David Chenery-Wickens, claimed he had travelled with her on the 11.07am train from East Grinstead to East Croydon, before changing to catch a train to Kensington Olympia where they parted just after noon that day.

Mr Chenery-Wickens claimed he thought his wife was attending a business meeting with the BBC and had arranged to meet her after her 3pm appointment at Bloww Hairdressers in Regent Place.

He called the Metropolitan Police and reported her missing when she did not arrive for that appointment.

Six days later Mr Chenery-Wickens, a self-titled spiritualistic reverend, was arrested on suspicion of murdering his wife.

Police held him for 72 hours questioning him about his wife's disappearance before releasing him on bail on Monday morning.

Yesterday Sussex Police officers were outside East Grinstead train station handing out posters showing a picture of Mrs Chenery-Wickens and her blue Audi.

They are appealing to anyone who may have seen her or the car on the day she is supposed to have travelled to London from East Grinstead.

The vehicle, which has been examined, is now in the hands of the police.

Detectives recovered the car after launching a missing persons inquiry but are refusing to say where they found the Audi.

East Grinstead train station has several CCTV cameras including one in main entrance and one in the car park.

Detective Chief Inspector Steve Johns, from Sussex Police, who is leading the inquiry, said: "The CCTV we have seen does not show Diane.

"Around 100 officers are now working on this case. We consider it a major murder inquiry."

Mr Chenery-Wickens is still on bail but DCI Johns confirmed that at the moment they had no other suspect nor were they questioning anyone else as a suspect.

For more than four days after Mr Chenery-Wickens's arrest several search teams and a large forensic squad searched the home Mr Chenery-Wickens shared with his wife in Duddleswell.

Two cars were removed from the drive and the waste tank and drains outside the £500,000 property, known as Hazelden Cottage, were dredged.

But DCI Johns said yesterday the investigation of Hazelden Cottage had now ended and due to "specific information" that had come in to them in recent days the search had moved to the surrounding woodland, which forms part of the 14,000-acre Ashdown Forest.

Teams of underwater rescue teams have begun searching deep silt bogs on the edge of the B2188 around three miles away from the couple's home in a part of the forest known as Church Hill.

There are thought to be several of these large neck deep swamps across the 14,000 acres but it is believed the early part of the search will only focus on those close to the road.

Wearing dry suits the team of rescue officers spent over an hour wading through thick silt. The bogs are full of mainly natural debris so man-made materials like bags are easy to detect.

At the same time as the swamps were dredged yesterday a larger team of around 20 officers combed the dense surrounding woodland.

Last night Diane's brother, Russel Wickens, speaking exclusively to The Argus, said: "We are extremely concerned. I want to do everything I can to help.

"At the moment I can't comment about the fact that it is a murder investigation, I can't say how I feel."

Mrs Chenery-Wickens parents and sister live in Crowborough and are said to be in deep shock about her disappearance.

Anyone with information should call Sussex Police on 0845 6070999 or Crimestoppers anonymously on 0800 555111.