Big Boss Interview

Clive Chesser, chief executive of PureGym, says surviving cancer fundamentally changed him as a leader — deepening his empathy and reshaping how he approached life, including changing career..

His diagnosis came during an extraordinarily difficult period in December 2021. While leading his then pub business through a complex private equity transaction, he was experiencing persistent breathlessness and fatigue he initially attributed to long COVID. After noticing swollen lymph nodes in his neck, members of his family — several of whom are senior doctors — urged him to undergo further tests. He completed them just before finalising the business deal.

Christmas brought what he describes as an unimaginable sequence of events. On Christmas Day, his father-in-law died while his wife isolated at home with COVID. Shortly afterwards, Chesser received confirmation that he had cancer in his lymph nodes. The following day, he says, he faced the hardest moment of his life: telling his three teenage children he had cancer.

At the time, Chesser was marathon-fit, training regularly and running annually. That physical condition proved critical during treatment. His fitness enabled him to tolerate more aggressive radiotherapy and additional chemotherapy rounds, improving his chances of full recovery — which he ultimately achieved. The experience, he says, transformed his sense of purpose and made his subsequent appointment as PureGym’s chief executive feel profoundly aligned with his personal journey.

That personal conviction underpins what he describes as a broader fitness revolution reshaping the UK gym industry. Nearly half — 47% — of PureGym’s January 2025 joiners were aged 25 or under, reflecting what Chesser sees as a generational shift in attitudes to health. Younger members, particularly Gen Z and Gen Alpha, are integrating fitness into their social identity. Gyms are becoming social hubs, not simply places to exercise, where mental wellbeing and community sit alongside physical strength.

He describes a trend he calls “fitness snacking” — members moving fluidly between gyms, boutique studios and fitness events before returning to a core membership. Despite this apparent transience, average tenure stands at 19 months and is rising. Most new joiners are returning members, a notable fact given PureGym’s no-contract, month-to-month model, where members actively choose to stay.

Women are driving another significant shift in the market, moving away from cardio-dominated routines towards strength and conditioning. In response, PureGym has introduced more than 50 women-only workout spaces across the UK after research showed many women prefer environments where they feel more comfortable and less exposed. These areas exist nationwide and sit alongside screened lighter-weight zones designed to reduce intimidation for first-time users. While the majority of PureGym’s 456 UK sites remain mixed-gender spaces, Chesser argues that offering choice has been critical to growth and inclusion.

Chesser also delivers a critique of the Labour government’s economic performance, arguing it has failed to deliver the long-term growth strategy promised before taking office. He points to National Insurance rises and the continued burden of business rates on bricks-and-mortar operators — including gyms and pubs — while online businesses face comparatively lighter structural costs.

He draws a stark comparison between government and business leadership, noting that the UK has had six Prime Ministers in ten years — instability he likens to running a football club rather than a company built on rolling five-year strategies and careful succession planning. In his view, the government remains trapped in short-term crisis management rather than long-term economic planning.

Presenter: Sean Farrington Producer: Olie D'Albertanson Editor: Henry Jones

00:00 Fliss and Sean intro pod 01:50 Clive joins BBI 03:30 Growth on Gen Z gym users 10:20 Women only spaces and safety 16:00 Low cost model 25:20 Govt's 10 Year Health Plan 28:40 Clive's cancer journey 39:15 Frustration at govt's growth promises