Most burglaries are carried out by the opportunist and can be prevented. In one in five cases, homes have been left insecure.

Lancelot offers the following advice:

* Lock windows and doors, even when at home. You will feel safe and be safe.

* All windows should have key operated window locks.

* Never leave keys in doors or window locks.

* Check doors are robust and fitted with a BS 3621 mortice deadlock. If they are not strong and safe, neither is your home.

* Ensure you postcode your valuables using an ultra-violet marking pen. Write your postcode followed by your house number.

* Look to prioritise. Cost may be an issue. Secure the rear and side of your home first.

* Organise your neighbours. Neighbourhood Watch is a must, it is free, it works and it can entitle you to reduced home insurance premiums.

* Take responsibility - act now.

For further advice on home security or approved intruder alarm installers, contact your local crime prevention officer.