Burglars won't go to the trouble of breaking in if they can just knock and be invited in. So always be on your guard when anyone you're not expecting - a man, a woman or even a child - turns up at your door.

• Bogus 'officials' may be smartly dressed and claim to be from the council, a gas company, health authority or other organisation. Their real purpose is to talk their way into your home to see what they can steal.
• Bogus 'dealers' may offer to buy your antiques, furniture or jewellery, at what seems to be a good price. Chances are they're trying to trick you into selling something for a lot less than it's worth.
• Bogus 'workmen' may say that they need to come in to make urgent repairs. Again, they really want to steal from your house. You also need to be careful of callers who offer to make building repairs or tarmac your drive. Often they'll ask for money in advance; they may even offer to drive you to the bank to withdraw money to pay them. They could then simply disappear, or do a poor job very expensively.

If you need any building work done, get several written quotes from reputable firms, then decide which one is best. If in doubt, talk it through with a neighbour or someone in your family.

Genuine callers will normally make an appointment first and will carry identification with their photograph on it.

Advice is to follow the DOORSTEP Code:

• Don't open the door without using the Doorstep Code
• Observe first - always look through a window or door viewer
• Only open the door after connecting a chain or limiter
• Refuse entry if you are not satisfied
• Switch on outside lights when it's dark to see who's there
• Think 'thief' - ask to see an identity card and check it closely
• Ensure strangers are not left alone in your home
• Protect yourself - if you are worried ring the police.