Over the last quarter of the Twentieth Century P&O diversified into construction management (through the Bovis companies, which it owned from 1974 to 1999), property investment and development, and a variety of service businesses including exhibition and conference centres, but most of these activities were disposed of following the company's decision in March 1999 to concentrate on maritime and transport. Its P&O Ports and P&O Cold Logistics divisions developed from P&O's operations in Australia, where it has a leading position in these fields.