Does websites based in UK need an imprint?

Hey i saw a message on two skyp3 groups where i have been added
that somebody is going to sue Damiens company because of a Mod and also because there is no imprint and because of admins reading members pm without having their or a courts permission bla bla bla .

Thats not important.

Important part is i own a company in the UK and have hundreds of websites.
Am i really obliged by uk law to have an imprint on all my websites ?

I made a quick google search and found an Wiki site where it…

Does websites based in UK need an imprint?