You don’t need any tools most of the time – a lot of thieves just use the bike as a lever. They just pick the bike off the ground, twist it, and it’s gone. Even the strongest of D-locks can be broken in this way.
Basically – always expect your bike to be nicked if you live in a city and you lock it outside. If you don’t want your bike nicked, don’t lock it up in the street. I’ve even had a 99 quid Decathlon special that was found in the cellar of my house when I moved in nicked from outside work. It was on the first day I even used the thing, and was probably not even worth a fiver. My mate had the grips nicked of his old 18 quid rat BMX. The grips! 😆
