Sorry to hear that it got stolen. We've put together this Top 10 to offer some advice about preventing the theft of cat converters, which includes the Cat Clamp at number 8: kit.honestjohn.co.uk/top-tens/top-10-ways-to-preve...t

The CatClamp, as the name suggests, 'clamps' to the exhaust pipes, allowing different sized and shaped converters to be protected. Locked to the vehicle’s chassis up to seven times, it makes stealing your catalytic converter very difficult for a thief in a hurry. Three options are available, starting at £99 (CatClampEconomy) and topping out at £350 for the CatClamp MAXX³. More details and buying options can be found on the CatClamp website - however - we haven't personally tested the device ourselves.