The US business will be run by Jeff Haselum (pictured) who has been promoted to head of US Research. He joined the agency in Manchester nine years ago, most recently as head of research teams.

It is currently working with GSK, PepsiCo and Shell in America and the new office will help support those clients and gain new business in the region.

This addition to its business follows the launch of an office in Singapore early last year.

Group managing director, Quentin Ashby, said: "Having successfully launched in Southeast Asia two years ago we are delighted to be branching out in the States. Our initial focus will be with our current clients but in time we will develop new business opportunities across North America."

In May this year the company underwent a management buyout by the senior management team.