Former footballer Ashley Cain, Love Island star and Muay Thai practitioner Kaz Crossley, fitness trainer Michael Griffiths, and YouTuber Olivia Jarvis co-star in Gym King's Nothing Beats Belief campaign, aiming to 'reinforce Gym King’s fitness credentials' and inspire people to 'achieve their fitness goals in time for the high summer season'.

The new campaign follows the announcement that Gym King has secured a multi-million pound investment from JD Sports, and Griffiths shared the news on Instagram, posting campaign imagery captioned 'Belief is the power that fuels your purpose'.