SG, my statement that you were wrong relates to your assertion that there was no ability on the part of private individuals to sue other individuals or companies for invasion of privacy. In fact, there is. You can get an injunction, damages and have the photos or whatever handed over or destroyed.
I am not sure what Article 8 you are referring to. Article 8 of the Convention says nothing about bringing an action, it says everyone has the right to respect for his private and family life, his home and his correspondence, then sets out the limited circumstances in which the signatory states may derogate from that.
The Human Rights Act 1998 is not really the issue, as our courts have recognised and protected an enforceable privacy right through case law.
You do not need to be a celebrity to bring an action and you do not need to be bringing an action against a media company.
Also Gizmo, the fact that you gave permission for the photos to be taken may be relevant but it does not stop you from complaining (or suing) now. You have not given permission (in fact, you have expressly withheld permission) for the photos to be put on the web for all to see. In any case, your daughter has her own right to privacy and has given no consent at all. You are entitled to try to stop publication on her behalf. By the same token, if an ex had taken naked photos of you with your consent then was wanting to publish them or sell them after you broke up, you would be able to stop him using confidence and/or privacy law.
That's not necessarily the only legal basis for stopping this, as Miggsie's post makes clear.