WPP has brushed aside the imminent loss of its status as the world's biggest advertising agency by upgrading its outlook for 2013.
Boss Sir Martin Sorrell a dmitted last month's "big, bold" merger move by Publicis and Omnicom came as a surprise , but dismissed the threat of the enlarged POG group, saying its organisation and structure would be "clunky".
He added: "Potential client and, even more importantly, people conflicts are considerable."
"All in all, we believe a post-POG ( Publicis Omnicom Group) world presents us and other competitors, as a result, with enhanced opportunities and is at worst neutral and at best highly positive," he said.
In a bullish half-year set of results, WPP said like-for-like revenue growth hit 5% last month, up from 2.4% over the first half of the year and the biggest monthly hike so far this year.
It reported more than half a billion pounds in interim profits for the first time, with underlying pre-tax profits up 12% to £524 million thanks to a resurgent performance from the UK and US, accounting for 12% and 34% of overall group turnover respectively.
The UK was the strongest performing region in the second quarter, with revenues up 5.4% against 3.7% in the first three months, while the US recovered from a 1% fall in the first quarter to see turnover rise 2.4% in the following three months.
WPP said it now expects full-year revenues growth of more than 3% following a stronger second half.
The UK and US revenue rise offset slower growth in emerging markets and ongoing woes in Europe, where first half like-for-like turnover fell 1%.
The group signalled increased client confidence and said corporate balance sheets were now much stronger as economies recover from the financial crisis.
But public relations and public affairs budgets continue to come under pressure, with interim underlying earnings from the division falling to £59.4 million from £62 million a year earlier.
WPP said 2014 "looks a better prospect" for major advertising events, with the World Cup in Brazil, the Winter Olympics in Sochi and the mid-term Congressional elections in the US.