Duggan, 58, of Kent Road North, Harrogate, failed to appear at Leeds Crown Court on 6 March 2018 in relation to a fraud hearing and a warrant for his arrest was issued by the court.
Police are appealing to anyone who has seen Mr Duggan or knows where he is now, to contact them.
Mr Duggan also has connections to Caernarfon in North Wales, Halifax and the general West Yorkshire area.
Anyone with any information is asked to call their local police on 101 and pass information for North Yorkshire Police incident number 12180038819.
If you prefer to remain anonymous, you can pass information to Crimestoppers on 0800 555 111.