Police try to retrace steps of missing make-up artist
Mrs Chenery-Wickens, 48, from Duddleswell, near Crowborough, was reported missing by her husband on January 24.
Her husband, David Chenery-Wickens, 51, has since been arrested on suspicion of her murder and released on police bail.
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Hide AdDCI Steve Johns, who is leading the investigation, said: 'We want to hear from anyone who had seen or spoken to Diane in the week she went missing.
'The last friend to contact Diane, according to the information we have received, is a female friend who spoke with her on the phone between 5 and 6pm on January 22. Diane was reported missing two days later.
'We have collected and viewed CCTV in an effort to retrace her steps. At the moment we have not been able to identify Diane on any of the CCTV footage we have viewed so far, and as far as we are aware, she did not attend a meeting at the BBC on January 24.
'It is out of character for Diane not to be in touch, especially with her parents. If anyone has any information they should contact the police on 0845 60 70 999.'
Police have searched the couple's home and areas of the Ashdown Forest.