Fillion (pictured), who is based in Montreal, Canada, previously worked as head of commercial analytics and strategy at Diaceutics, where she has also held the role of head of market research.

She has also held roles at market research agencies IFOP and PSL Research.

Marianne Purdie, co-founder of Purdie Pascoe, said: “We are delighted to have Marianne on board.

“Her background in molecular biology, extensive market research experience in the diagnostics industry and commercial acumen will expand our client services in the increasingly important area of personalised medicine.

“Marianne’s appointment also serves to expand our geographic footprint.”