I was quite taken aback when I first noticed this bike tethered at one of my local stations in Surrey. Since I first noticed it the bike has been regularly left there by a commuter for about a year so far without mishap although I would not do it myself.
Though you have half a chance in Surrey as most of the residents own so much and earn so much that they cannot be bothered to nick anything. Though not all of course, and railway stations are renowned for bike theft.
If he/she is a 9:00AM to fiver then it gets removed before the bewitching hour when most of the tea leafs are out and about.
It still makes me wonder whenever I see it though!