Sleaford Rural South Neighbourhood Policing team have had more reports of bogus callers in the area.
Over the last week there have been several reports of people cold calling at homes in the Sleaford area. Their aim is to buy any unwanted gold, silver or antiques.
They have over the last week been calling at addresses in Helpringham and Heckington and Sleaford town itself too.
Should any one see anything suspicious call police on 101.