Pre-tax profit at WPP soared almost 30 per cent to £287 million in the first half of 2006.
The world's second-biggest advertising and marketing company, which includes ad agencies such as JWT and Young & Rubicam, said revenue rose 16 per cent to £2.86 billion.
Organic revenue, which excludes currency fluctuations and recent acquisitions, was up 5 per cent.
By region, organic growth was up 9.4 per cent in Asia Pacific, Latin America, Africa and the Middle East; 4.5 per cent in North America; 4.5 per cent in continental Europe and 1.2 per cent in the United Kingdom.