Fitness•Industry News Marc Diaper Tapped as CEO of Fitness First UK Courtney Rehfeldt July 11, 2025 Share on Facebook Share on Twitter Share via Email credit: Fitness First UK Subscribe Now Log in The fitness industry veteran is returning to the gym scene at Fitness First UK after exiting Gymbox last year Fitness First UK, an operator of nearly 40 gyms offering group classes and personal training, has named Marc Diaper as its new CEO, following the departure of Justin Musgrove earlier this year. Diaper, who will officially step into the role on July 14, according to Health Club Management, brings more than 20 years of fitness industry experience. He began his career as a personal trainer and sports therapist and most recently served as CEO of Gymbox, where he spent 14 years in various leadership roles. “It’s great to be back, refreshed and working for one of the industry’s most iconic brands. The brand that introduced many of us to our first gym experience,” Diaper said in a LinkedIn post confirming the news. “Exciting times ahead and more motivated than ever.” He, along with other execs, exited Gymbox last October following Urban Gym Group’s acquisition of Sparring Partners Holdings, the parent company of the London-based boutique chain.The fitness industry veteran is returning to the gym scene at Fitness First UK after exiting Gymbox last year Fitness First UK, an operator of... Membership Required You’ve reached your 3-article monthly limit. Subscribe to ATN Pro for unlimited access to industry-leading coverage, insights, and analysis shaping the future of fitness and wellness. ATN Pro members get: Unlimited access to Athletech News articles Exclusive access to ATN Pro-level reporting Discounts to ATN the Innovation Summit VIP access to community events Exclusive email newsletters Subscribe Now Already a member? Log in Already a member? Log in here Tags: Fitness First UK Gymbox Marc Diaper UK