Kryptonite New York disc lock, £56.99
Time used: Six months
What’s good? This little disc lock travels with me whenever I make a journey that’s not garage-to-garage. It’s light enough to carry in a rucksack, but easiest to transport in a central area of a tankbag or under your bike’s seat).
The 14mm hardened steel pin rotates, which the makers claim makes it more resistant to attack. There’s also a natty little carry pouch… oh, and my bike’s never been stolen.
What’s not? Getting the key into the lock can sometimes be a little fiddly. As can turning it. Although it’s a clear barrier to anyone wheeling your bike away if they’ve smashed the steering lock, it could be more of a visual deterrent.
Although it would undoubtedly be a major inconvenience to return to a bike park to discover your bike is gone, it’s also quite a pig to discover a bike with a disc lock jammed in your front mudguard, and a shagged brake disc (I’ve been there, believe me).