In early October, the American Petroleum Institute, the U.S. Chamber of Commerce, the Independent Petroleum Association of America, and the National Foreign Trade Council challenged the rule in court.

FORBES: Oil Companies Are On A Slippery Slope With Their First Amendment Claim Against Disclosure Rules

Previously head of the First Division Association, the trade union for top civil servants, she is now a minister at the Foreign Office.

BBC: By Martin Rosenbaum