I decided to report a crime and I have evidence (in the form of a laptop I obtained from the peson willingly). After reporting this to the police the person has since confessed.

I will obviously have to hand in the evidence but will I have to still make a statement and/or give evidence in court?

Never done anything like this before... :-/
yes that's what I thought, that as the actual evidence isn't a verbal/personal 'thing' it's a physical laptop I probably wouldn't have to stand up in court (which is a pretty scary thing to do I'd imagine)