Cheshire?? is that somewhere in our solar system??
You are going to have to do some homework to figure out what works for you, there are a lot to choose from and many options. You are in the right place tho", start reading here Attention Newbies! A FAQ to the FAQs and then make sure to look around in the fabrication forum, lots of ideas there.
If you don't know where to start, maybe you already have an old computer or laptop you don't mind tearing apart..
Search and read a little before you ask questions and you will have fun (and be frustrated sometimes) building your carputer.