Dublin born Declan commenced his career in banking. During this time he studied PR and Marketing. In 1988, Declan joined WMO as a Sales Representative and soon was promoted to Sales Manager for Ireland. In 2005, Declan with Eugene bought out WMO and became Joint Managing Director.
In recent years Declan has pursued his ambition in the sports arena and for the third year in a row is World Dead Weight Lifting Champion; having won his most recent in the world championships in Antwerp in June 2017