A letter sent by the council to its members reads, "... where the council believes that a company has demonstrated no progress in either changing the make-up of its board, or in presenting a clear plan to achieve that 30% target, it will begin recommending that its members oppose the re-election of existing directors".
Women make up 40percentt of its board, twice that of the typical Standard & Poor's 500 company.
Diageo comes closest, with women making up 44 per cent of its board.
Women make up nearly half of its board of directors, and it offers generous leave and flexibility benefits.
Women make up about 15.6 percent of boards of large listed companies in Germany, according to the commission.
The UK ranks sixth in Europe behind Norway, Sweden, France, Finland and Belgium, many of which – including Norway, where women make up 35% of board members – have set formal quotas for female representation.
Women make up 17% of board posts, well below the 25% target recommended by a government-commissioned review.
Women, said Deborah Mattinson, who was presenting some new research, make up 7.8percentt of board places across the FTSE 250.
Director general Tony Hall and one other BBC executive would make up seven of the board.
First, it is part-owned by the farmers - who make up 20percentnt of the board, ensuring their voice is heard.
Yet the England and Wales Cricket Board (ECB) is still dominated by men, with women making up only 14 per cent of its board.
