I'm a big advocate of asking yourself first if it is right. Treat it first as a moral question. Then as a legal and liability question.
I've looked at the site I think you are talking about.
I don't know much about English free speach laws. I know it is different from the U.S. in many areas - for example, I know you have hate speach laws. England is more restrictive about writing about active court cases. (Neither is the issue here.)
But, still England is pretty strong on free speach rights.
I would be more concerned about liability than criminal law if I were you. What if a user took your implied advice, and got arrested, charged with a crime, and rotted in an unpleasant jail for many years? What if they feel that their relianace on your advice got them there? What if they did something that is even legal in England, but not legal in some other country?
At minimum, I think you need to see an attorney about a disclaimer for your site, need to look into the technology for enforcing the reading of a disclaimer, and discuss with your attorney the state of "shrink wrap license" (or, in this case, disclaimer) with your attorney. Finally, I'd talk to your attorney about incorporation, if you haven't already done so.
As well as think long and hard about how you would feel if this were to happen to one of your users.
I am not condeming you. I am a big advocate of people being informed. It seems to me you are only informing. But it also seems to me there is the potential for legal complications.
I have some similar issues with a site I am developing. Because it is a kind of social networking site, I will have similar issues. The site will containing information and ratings about establishments. I have to be concerned about establishment owners who feel they have been slighted.
I will not launch the site before seperately-incorporating the business.