Fensome will leave Porter Novelli London on 13 December and is due to start work at Ogilvy New York in the role of senior vice-president in January.
The move will reunite Fensome with Kate Cronin, who quit PN in June to become managing director and co-head of Ogilvy’s global health and medical practice (PRWeek, 18 June).
Fensome, who spent three years working with Cronin at Porter Novelli New York before returning to the London role in October last year, said she wanted to return to New York to be closer to the global HQs of the world’s top pharmaceutical businesses.
‘In Europe, PR work is often co-ordinating programmes across different markets, whereas being based in the US provides a great opportunity to actually drive global strategy,’ she added.
At Ogilvy, Fensome, who leaves PN after almost seven years, is set to report to both Cronin and health practice co-head Sherry Pudloski.
Ogilvy’s New York office has just secured the highly coveted US Pfizer pain franchise account, which includes blockbuster arthritis drugs Celebrex and Bextra (PRWeek, 3 December).
PN was one of three agencies beaten in the pitch process.