Don't leave windows open or unlocked anywhere in the house.

Easily accessible windows should ideally be fitted with double glazing.
 

Gravel around your home is a great deterrent, as it makes it harder for burglars to approach without alerting the occupant.

Make sure hedges are trimmed back so your property is not hidden from view.

If you've bought new valuable items, don't leave the packaging out with your recycling for an extended period of time, as it can be a clue as to the value of your possessions.

As well as all the above security measures, consider installing a smoke alarm and carbon monoxide monitor, too, to protect yourself from other hazards. You can buy these on their own, or as part of a package with some burglar alarms. It's also worth remembering that while you want to make your home as secure as possible, you need to make sure this won't stop you from being able to escape – or be rescued – in an emergency such as a fire.