The scheme can be run in many ways, and the transfer of ownership can be a bit of a minefield.
The important thing to know is that all your payments over the length of the contract are hire payments only. In order to get the bike for nothing at the end of paying your monthly fee, you would have to be paying these for approximately 6 years. According to the HMRC the bike will have a nominal value after this time, so it can be given to you for nothing... as long as whoever owns that bike are happy for you to have it for nothing.
Most schemes last for 12 or 18 months. Your employers or the company who run the scheme will normally want to transfer ownership at that time. They can extend it of course, keeping ownership for another 5 years and then transfer it for nothing. I don't run our scheme like that though because it becomes a nightmare to track when you have staff moving on.
HMRC have developed some guidelines which state how much a bike should be worth depending on its age and original purchase price:
For example, after 12 months, a bike that originally cost more than £500 will be worth 25% or its original cost. E.g. If you signed up for a £1,000 bike then HMRC would expect you to pay £250 to take ownership of it after a year.
Most schemes however will not expect you to pay this much. They may take a fee or anything from 10%, 5% or even nothing.
BUT if you don't pay what the HMRC expect you either have to prove to them why it isn't worth that much, or pay tax on the difference between what you did pay and what you're expected to pay.
The scheme I set up doesn't expect anything to be paid to transfer ownership, therefore we're transferring the asset as a benefit in kind to the employee. If we use the £1,000 bike example then the employee will pay tax on the £250 via an adjustment to the following years' tax code and will cost the employee £50 if they're a 20% taxpayer or £100 if they're a 40% taxpayer.
I hope this makes sense, but let me know if anything needs clarifying. If you contact your HR dept or whoever you first contacted to join the scheme then they'll let you know what your company's procedure is.