Police have put out a renewed warning against rogue traders after reports of unknown persons trying to sell generators and power tools from vans at residents' doorsteps.

A spokesman said: 'These sellers will not offer any consumer protection, so can we advise you to 'say no' and report these incidents to the police and Trading Standards?'

Police said there was an incident in Wymondham last week where two 'Irish-sounding' men entered a farm and tried to sell a generator.

It follows a day-long blitz on rogue traders carried out on Norfolk's roads by the police, Trading Standards and other agencies which netted scores of offenders, including one arrest for drug driving, the recovery of a stolen trailer and three reports for driving without insurance. Police also reported two drivers for waste carrying/scrap metal dealer act offences and issued 13 traffic offence reports.