"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...

That's completely different from a company freely refusing to serve a customer because of opinions they expressed.

The customer would have no basis to challenge under the HRA, because there's no law or legal decision governing the refusal.