Police officers say they are concerned for the safety of a 48-year-old man who was last seen at his home address in Mansfield.
Richard Simpson was last seen on August 10 at his home address in Radmanthwaite in Mansfield at around 7.15pm.
Richard also has connections to the Hyde Park and Notting Hill areas of London.
He is described as white, 5ft 9ins tall, of a medium build, has short brown hair and wears glasses. He was last seen wearing a white t-shirt with an image of the band Queen on the front, a pair of blue jeans and white trainers.
If you have seen Richard, or know where he might be, please call us on 101, quoting incident number 479 of 14 August 2017.