Cold calling is not illegal. It can occur in person, at your doorstep or via telephone.
Cold calling is defined as; "the solicitation of business from potential customers who have had no prior contact with the salesperson conducting the call. Cold calling is used to attempt to convince potential customers to purchase either the salesperson's product or service."
If you are approached by a cold caller offering to sell you goods or services that cost £42 or more, they must provide you with a written notice that gives you 14 days to cancel the agreement. If you do not recieve a notice from the cold caller, they are committing an offence which the local authority Trading Standards will investigate.
If you aren't expecting to hear from a salesperson or business, be cautious of your dealings with them. Do not feel pressured into handing over money or bank account details to pay for a product or service that you weren't planning to buy before they called or arrived at your door.
You are well within your rights to hang up the phone or shut your door with a 'no thank you'. Do not feel compelled to enter into any conversation with them, if you do not wish to.
“No Cold Callers” stickers can be obtained from your local policing team or from your local Trading Standards office.