Neil Matheson, the U.S.-based CEO of Huntsworth’s biggest and fastest-growing unit Huntsworth Health, which includes Nitrogen and Tonic Life, has departed after eight years.

Matheson joined Huntsworth Health in 2010, having previously led Axis Healthcare Communications and before that ApotheCom.

He has grown Huntsworth Health from a unit contributing a quarter of the wider group’s revenue, to one which accounted for just over half of it in 2016 — when it was also the fastest growing business of the group, with like-for-like revenue up 13.8% to £90.8 million.

See also: Huntsworth buys health group TCEG for $28 million and signals U.S. ambition

Yesterday, Huntsworth announced that its health division had again been its strongest performer in the first half of the year, achieving like-for-like growth of nearly 20%, firmly on track to exceed £100 million revenue for the full year.

Huntsworth CEO Paul Taaffe said: “Neil has left the business with our enormous thanks. He set out what he wanted to achieve when I was appointed CEO just over two years ago and, as our half year results showed, mission accomplished.

“All his colleagues at Huntsworth are grateful and wish him well on his next venture.”

It is not clear whether a direct successor will be appointed.

See also: LiquidHub acquires Eveo to form new health offering

At the start of the month, Huntsworth acquired The Creative Engagement Group, a three-brand U.K. group predominantly focused on healthcare clients.

Meanwhile, Tonic Life has recently experienced leadership changes, with Maryellen Royle promoted to global CEO in October following the departure of Mary Smiddy, and a new MD hired in its Philadelphia office at the start of the year. Also in October, Jon Clark was appointed CEO of Nitrogen.

Meanwhile, the U.K. MD of Tonic Life Tamsin Tierney left the business earlier this year for a role at Cohn & Wolfe.

Other Huntsworth Health brands are ApotheCom, Audacity, Axiom, and Evoke Health.

This story originally appeared in PRWeek.

From the September 01, 2017 Issue of MM+M - Medical Marketing and Media