it depends. Some places don't mind if you settle early...others will charge you all the interest you would have paid if you had paid it off over time, some fall in the middle. You would really need to check your agreement or ask the company who hold your agreement, who may not be the shop.
Thanks both of you. They did say when I bought my bed on finance that I could pay more each month if I wanted to. I’ll give them a ring on, Monday. Cheers.