There are two main types of lift, a Straight, and a Curved. Which lift you end up with is all dependent on the shape and layout of your particular staircase.
Why not give us a call, we are more than happy to discuss which option is best for your property. As always, our advice will be free and impartial. We can also arrange a free, no obligation site visit and discuss in person, answering any questions along the way if this is preferred.