The new line-up, which is being implemented by the executive creative director, Nick Bell, is spearheaded by Mike McKenna and Greg Martin, the joint creative directors at Leo Burnett.
The move reunites McKenna, a copywriter, and Martin, an art director, with Bell, their former boss at Burnett.
The duo, who joined the agency in 2001, took over the role of joint executive creative directors for six months following Bell's departure for JWT last March.
They are best known for their Alka Seltzer and Nursing Recruitment campaigns.
Hugh Todd, a copywriter, and Adam Scholes, an art director, are joining from Saatchi & Saatchi. They launched their careers at Bartle Bogle Hegarty, where they created the first "twisted" ad for Levi's. Their awards tally includes a gold and silver at Cannes for Coco de Mer and a gold at the British Television Advertising Awards for Harley-Davidson.
They will be joined by the freelance art director Colin Jones and the copywriter Michael Campbell, who left Saatchis earlier this year.
The line-up is completed by Laurence Quinn, a copywriter, and Mark Norcutt, an art director, from Abbott Mead Vickers BBDO.