Investment property manager Wentworth Mutual has appointed Kingsley Lamont and Peter Brigdale to its board of directors, following the retirement of David Armstrong and Jong Kan Foo. Mr Lamont is a former director of Australian Stock Exchange-listed OAMPS Limited, where he was involved with acquisitions growth.Mr Brigdale, a partner of corporate advisory firm Thompson Partners, and formerly with Lonsec Limited and National Australia Bank, has extensive financial markets experience gained in Australia and the United States.