As spring arrives, 'uninvited' cowboy workmen appear in droves, mostly targeting elderly and vulnerable homeowners.

They have a 'knack' of identifying an elderly person's property or in the summer months just pulling up in their van and pointing out a problem with the property whether it be with the roof, the windows or the garden.

One elderly man in Surrey attempted suicide after being targeted by heartless 'uninvited workmen' who charged him £10,000 for supposed structural work to his window that was worth just £30. Thinking they could con the man out of even more money they repeatedly returned reducing the victim into such a state of anxiety that he felt he just could not go on.

Many traders who call at your door are honest and genuine (eg members of the Direct Selling Association (DSA) who are bound by a strict code of practice.) However, some are not and can be extremely persuasive.

Reputable callers should:

• Present personal identification and identify who they represent.
• Make it clear from the outset if they are selling something.
• Provide written information on cooling off periods and cancellation rights.
• Not use pressure to sell goods or services.
• Not expect an on-the-spot decision.
• Leave as soon as they are asked to do so.

Homeowners should not allow themselves to be pressurised into taking services. Thank the salesman and ask for written contact details and say you will call them back after you have thought about the deal. If you feel under pressure after this you may well have an 'uninvited workman'. If you feel there genuinely may be work required, ask other companies for a quote, but remember, a low price may still not be the best deal.

Some councils, like Surrey, run a 'Doorstep Busters' team who:

• May be able to challenge the trader if called in time
• Can disrupt the activities of doorstep sellers who prey on vulnerable consumers, especially the elderly
• Will ensure that doorstep sellers comply with consumer laws
• Will take appropriate action where consumer type laws are broken
• Will mediate in disputes between doorstep sellers and consumers where there is evidence that the consumer has been exploited
• Look to gain intelligence about doorstep sellers operating in the area who make consumers feel threatened or disadvantaged

To protect yourself say "No." For example:

• Say you do not buy goods or services at the door unless you are genuinely interested.
• Say you want more time to think about it.
• Say you want to compare prices by getting other quotes.
• Say you have to discuss it with someone else (eg a partner).