PEOPLE are being warned that a group of cold callers known as the Nottingham Knockers are operating in Worcester.

A man was abusive to one home owner in Hallow Road, St John's, after he refused to buy any of his items on Thursday at just before 2pm.

He was described as white, age late 20s, 5 foot 7, short brown hair and of slim build.

He was carrying a blue rucksack.

'Nottingham Knockers' are persistent and pressure people into buying their cleaning products.

Police officers have warned that the sellers are not official no matter what identification they show householders.

People have been warned that if a sales person comes to their door selling any products they should not be persuaded to part with money or for products they do not need or are of poor quality.

People have also been advised to use precautionary measures such as a door chain and to ignore callers if they are unsure who it may be.

To sell on the doorstep, sellers need a valid peddler's certificate and not just identification with the person's photograph on it.

Anyone who spots the doorstep traders should not answer the door to them and report sightings to the non-emergency police number on 101.