As stated, it’s bought by your company and you get the tax deduction, after you’ve paid it, you then ‘hire’ it for a set period, usually the same period that the amortisation reduces the assets value to zero for the accounts.
If they didn’t state this, then it would be a taxable benefit in kind after you finished payments, as the bike would have a value that you would have to pay for it.
In short, it’s very much Ts and Cs to make sure that the scheme states its intended purpose up front, i don’t think i’ve ever seen anyone police it, i turn up to work on a bike, not always the one i got, they do have cameras though, damn ;O)