Mick F wrote:I bought a curly wire plastic-coated lock from B+Q a few years ago. Quite cheap £3.99 I think, and it fits in a jersey pocket ok. It stretches out to about a metre.
I've used it many many times, and I'm very pleased with it.
+1 though I don't think it'll fit in a jersey pocket too well. B&Q do sell them in packets of three(steady
)that use the same key for all three (six keys, three and three spare,I think) which is handy if you, like me have three different bags on three different bikes 
.I have one key left in each lock and a spare on my house keys in my pocket so when any one of the bikes is locked up I have a spare key with me at all times(now) as it has been known for me to loose a key,only once,but I'd locked four bikes up with it.
Someone found it under-the-table-in-the-tearoom-where-we-were-sat,but only after we'd sawn-through-the-cable-with-the-borrowed-hacksaw
