Kryptonite New York
Chipps says, "I've tried my damnedest to break into bike locks over the years, subjecting them to a series of vicious tests - purely in the name of research of course. With the Kryptonite New York I've always had to resort to power tools to crack it. They're a bit on the heavy side, but if you want to do all you can to prevent somebody breaking your lock and nicking your bike, this is just about as good as you'll get and definitely worth the price tag."
Where: Amazon (www.amazon.co.uk)
How much: £70.46