Pure Gym said today it has become the largest gym operator in the UK with over 500,000 members, just six years after it first opened its doors.
The business, which operates 91 24-hour gyms across the UK, opened 24 new gyms in the last year at sites including London, Greater Manchester and North Road retail area in Preston.
Its members pay monthly fees with no contract commitments.
Pure Gym said its pre-tax profits jumped more than four times to £10 million in 2014 after its membership total jumped by almost half to 420,000, with its numbers crossing the half million mark last month.
Pure Gym founder and executive chairman Peter Roberts said: “In 2014 we delivered impressive financial performance whilst managing significant expansion.
“We have further exciting expansion plans for 2015 and look forward to another year of growth.”
The business, which competes against Virgin Active and David Lloyd Leisure, said it planned to open between 30 and 40 new sites this year.
It is understood to be one of the contenders in the £80m auction to buy LA fitness, which runs 47 clubs.
The firm is also looking at options to expand into new territories such as continental Europe, the Middle East and South America.
Last July, Pure Gym and rival The Gym Group abandoned plans to create a new low-cost player with more than 100 sites after the Competition and Markets Authority said it would launch a full investigation into the merger.