It is generally used as an appeal against a lower court decision, so the case is held against the decision of the lower court, which represents the government. However the initial case does not have to be to do with government interfering with speech and can be to do with the actions of a company.
"In 2001 a journalist at the Financial Times (FT) received a copy of a leaked document about a possible company takeover by Interbrew. The FT published the document and three other newspapers (The Times, The Independent and The Guardian) and the news agency Reuters, also reported on the issue and referred to the leaked document. Interbrew brought proceedings against the news groups seeking to identify who leaked the document to the FT. The UK Court of Appeal ordered the FT’s journalistic source to be disclosed to Interbrew, using a common law principle (the Norwich Pharmacal principle) and the Contempt of Court Act.
The newspapers and news agency applied to the European Court of Human Rights, relying on the Article 10 right to freedom of expression. The Court held that the disclosure order interfered with the right to freedom of expression. The Court emphasised the chilling effect of journalists being seen to assist in the identification of anonymous sources. It found that Interbrew’s interests in finding the source of the leak did not outweigh the public interest in the protection of journalistic sources."
No, you would start with suing the company using the extensive freedom of expression protections in UK common law, then if the UK court didn't rule in your favour, but you felt it was in the wrong to do so, you then appeal against the court using the human rights act.
"In 2001 a journalist at the Financial Times (FT) received a copy of a leaked document about a possible company takeover by Interbrew. The FT published the document and three other newspapers (The Times, The Independent and The Guardian) and the news agency Reuters, also reported on the issue and referred to the leaked document. Interbrew brought proceedings against the news groups seeking to identify who leaked the document to the FT. The UK Court of Appeal ordered the FT’s journalistic source to be disclosed to Interbrew, using a common law principle (the Norwich Pharmacal principle) and the Contempt of Court Act.
The newspapers and news agency applied to the European Court of Human Rights, relying on the Article 10 right to freedom of expression. The Court held that the disclosure order interfered with the right to freedom of expression. The Court emphasised the chilling effect of journalists being seen to assist in the identification of anonymous sources. It found that Interbrew’s interests in finding the source of the leak did not outweigh the public interest in the protection of journalistic sources."
http://www.liberty-human-rights.org.uk/human-rights/human-ri...