Havas has posted revenue of €516 million ($573 million) in the third quarter of 2015, an increase of 15.7% compared with the same period last year, and organic growth of 5.5%.
It brings the company’s revenue to €1.6 billion for the first nine months of the year, an 18.1% rise year-on-year.
Havas CEO Yannick Bolloré, said the business has maintained "strong momentum" between January and September.
Revenue in the UK was €69 million in the third quarter of the year, a 19% jump year-on-year. Havas saw organic growth of 6.3% in the UK between July and September.
Bolloré added: "[The growth] demonstrates that our strategy to drive increased collaboration among our creative, media and digital teams continues to create new business opportunities.
"With a seamless offering that leverages capabilities from across the group, we are a more valuable partner for our clients and more attractive workplace for top industry talent.
"North America once again proved to be a powerhouse for Group results, generating organic growth of 8.5%, thanks in particular to Arnold, Havas Life and Havas WW.
"Europe continues to deliver robust performance, and Asia-Pacific has made significant progress with a return to double-digit growth.
"On the strength of these very satisfactory results, we can look to the end of 2015 with confidence and enthusiasm."
Publicis Groupe: "Clients downsizing their accounts"
Earlier Thursday, Publicis Groupe reported a 33% growth in revenue to €2.33 billion ($2.59 billion) for the first nine months of this year, compared to the same period last year.
But organic growth for Q3 was 0.7%. Maurice Lévy, the chairman and chief executive of Publicis Groupe, said growth for September was nil. He attributed this to "an unusually large number of clients downsizing their accounts and postponing or even cancelling campaigns."
The holding company, which owns Saatchi & Saatchi and Sapient, reported significant growth in North America (49.2%), Middle East & Africa (27.1%) and Asia-Pacific (22.1%). But growth was smaller in Europe (20.9%) and negative in Latin America, down 16.3% year on year from €104 million to €87 million.
Its UK business was described as "still difficult", citing that Publicis Worldwide UK has had a new management team in place for only a few months. Revenue fell by 5.1% in Q3 after a 2.1% decline for the first six months of this year.
This article first appeared on campaignlive.co.uk.