Locks that work

They can either go out, try different tools, fail at first and hopefully get nicked for spending too long or making too much noise trying too hard, or look on here, take the right tools and rob your fucking bike.

If they really want your bike, they will get it, no amount of security/lock/method would stop them, they only act as a deterrent.

If you don't want your bike to be stolen, just use your wit, quite a handful of forumeager still have their bike for years, and some live in the east part of London even.