Anyone in the UK:

Is a .com domain worth much more to you then a .co.uk domain because I just made an amazing discovery that alot of things you can't get with a .com,
you could get using US or USA in the front or back of things with the .co.uk.
Would they have buying value to people in the US if they were actually US related? I'll clarify this, if I'm not being clear.

Also are their some domain names that are illegal on co.uk like one for example with fxxking on it (rhymes with bucking)ot bXXw job, etc?

Not really, in my book a .co.uk indicates a site with UK specific content, and a .com with international content. So if someone is the USA (or anywhere else) has a market in the UK it sometimes makes sense to do a UK only version of their site. A domain is only worth what someone will pay for it.

So fas as I'm aware there is no censorship of .co.uk domains.