If you really dont care if you have a .com/.co.uk/.info/.org/.net - then would it really bother you to have a free domain?
They would probably be something like:
www.(yourdomainname).(Companiesname).com - or sometimes you can get lucky and find free coupons for you own "proper" domain name.
PRetty sure Godaddy might, at the moment, be doing .co.uk domains for £2.99 or something stupidly low - so search the web mate and you will find what you are after!