My work do it and offered it to me when I moaned about not getting my fuel subsidised but our London office gets tube allowance and shit. (I do a daily 108 mile commute. A bike isn't going to help much..)
Basically the comapny buy it, then lease it back to you and you pay it off monthly. As I recall its tax free. It's good if you want to get a proper expensive bike but can't afford to flick it in.
Hardly the attitude that's going to get you into the cycling team for Rio 2016.