Domain names are required in order to have your own website. You can have one or more domain names associated with your hosting package, often companies try to own both the .co.uk and the .com versions so as to stop competition using which ever they don't have.
As part of our hosting, we allow you to 'Park' additional domain names over your live site. This means if your live site is www.exmaple.co.uk, you can park www.example.com on top of it, so if your visitors enter either into their browser, they will still see your site.
.co.uk domain names are bought at a minimum of two years and .com's are renewed at a minimum of one year. If you wish to purchase a domain for a longer perion of time, feel free to contact us and we can set this up for you.
Click here to read the Wikipedia definition of domain names.
Types of domain