[London] Mark Wnek, U.K. chairman of Havas' Euro RSCG Group, has quit the company to set up his own ad agency in partnership with Ben Langdon. Mr Langdon was ousted as regional director for Europe, the Middle East and Africa at Interpublic Group of Cos.' McCann-Erickson WorldGroup in June. He and Mr Wnek are two of the U.K. ad industry's most controversial and outspoken figures. Mr. Wnek said: "[The industry] needs people who have got the balls to get out there in a climate that is by no means friendly." The duo will put their own names on the door of the new agency but have not named any clients. Mr Wnek joined Euro RSCG, renamed Euro RSCG Wnek Gosper, in 1994 as creative director. The agency merged with sibling Arnold Worldwide's Partners BDDH in August and the U.K. shop is now predominantly run by the Partners BDDH management team.