Lionel Stanbrook, the deputy director-general of the Advertising Association, is leaving after nine years to join the public and regulatory affairs company DLA Upstream.
Stanbrook, who has mediated on issues such as tobacco advertising, direct marketing and the ban on advertising to children, takes up his new job next January.
Stanbrook worked for the European Commission from 1980 to 1983, before joining the European Parliament. He joined the AA in 1991 as the director of European affairs and special issues. At DLA, he will be managing director, public affairs.
He said: 'The opportunity of joining DLA appealed to me at once because of its determination to integrate high quality political advice with its established high standards of legal counsel. I am convinced that such a combination is vital in the increasingly complicated business future.'