Yes you can. To do this you will need to change the primary and secondary NameServers of your domain name and set them to ours which are:
You will normally have a control panel for managing your domain name, this will be able to be changed in there.
If you have a UK domain name then you can change the IPS TAG to our Tag which is WEBSPEED
IMPORTANT: If you want us to transfer your content over you must let us know before you change the nameservers so we can make a copy of your content.
If you are only working and operating in the UK then its better to go for a .co.uk domain name, however if your business is international then a .com would be better.