Around 250,000 portable sat-navs were stolen from cars in 2006, according to latest Home Office figures. And with an average of one break-in every 19 seconds, it pays to have a little extra protection.

The easiest solution is to take valuables with you – although that is not always possible, particularly on holiday, when it may be safer to leave your gear in the cabin than carry it to the beach or pool. And while locking electronic kit in the boot helps, for top security a safe is best. It should keep opportunist thieves at bay even if they get into the vehicle.

We looked at eight products that are designed to be fixed to the car with a cable or permanently bolted in the boot, caravan or motorhome.

The test
Top priority here is size, as a safe is no use if it can’t take all your kit.