Wheel clamps are highly visible and very difficult to remove, but they take time and effort to fit so they are most useful in protecting caravans, trailers and other vehicles not in regular use.
The Euroclamp is a lightweight clamp that is relatively easy to fit with a unique snap-on design. Ideal for travelling, it will provide a decent level of security for caravans and motorhomes. At £82.99 from Halfords, the Euroclamp could offer that little bit of extra security for show cars that are not regularly driven.
Bulldog High Security
Heavier and more robust than its Euroclamp counterpart, the High Security model is a no-nonsense crime deterrent. It's high-profile bright yellow exterior will make anyone think twice about stealing your wheels. At £99.99, this is a high-end long-term security option ideal for protecting caravans, trailers and cars when they're not in use.
Many cars are fitted with electronic immobilisers by the manufacturer. These in-built transponders or microchips prevent the car from starting unless you have the appropriate electronic fob to deactivate them. If your car doesn't have an immobiliser as standard, you can buy the Richmond Dis-Carnect Battery Immobiliser from Halfords for a mere £9.99. You might want to get an expert to fit the device for you, but once in it'll prevent the battery from starting the car should someone try to steal it.
Alarms are considered to be the most popular and effective security system available for cars and, coupled with one or more of the other devices reviewed in this post, will provide formidable protection for your car. Most modern cars come with alarm systems as standard, but they are available to buy and fit retroactively to vehicles that don't have them, such as classic cars. Please ensure that your alarm system is fitted correctly by an authorised mechanic and we recommend that you only buy systems approved by Thatcham audits. www.thatcham.org
Viper 3100V 1-Way Alarm System
The Viper 3100V is a good entry-level alarm system that covers doors, boot and bonnet and features a dual-stage shock sensor and a standard 12 volt siren. At £99.95, the Viper 3100V offers decent security on a budget.
Cobra 4138 Thatcham Category 1 Alarm System
The Cobra 4138 is an insurance category 1 approved alarm system that protects the whole vehicle. It features high security ACE remote controls with auto learning, a built-in immobiliser circuit, automatic re-arming, and a panic alarm. These alarm systems must be installed by an authorised installer, so it is best to take your car to a garage or have it installed by the supplier. At £149.99, the Cobra is a serious mid-ranged defensive device that should deter even the most determined criminal.
Directed Electronics 480XV 2-Way Thatcham Category 1 Alarm System
This comprehensive alarm system doesn't come cheap at around £350, but it is feature-rich and recommended by insurers. This system comes with a 6-channel 2-way security/keyless entry system, on-board door lock relays, a 3 circuit immobiliser, remote adjustable ultrasonic interior scanners, Revenger® Six-Tone Siren, parking light flash and additional horn honk.