DW Sports, a gym and sports retailer, has said it will enter administration, putting 1,700 jobs at risk.
The company, founded by former Wigan Athletic owner Dave Whelan, operated 73 gyms and 75 stores across the UK.
Last month, it said it would shut 25 stores.
The company’s website has ceased trading. DW said it would work with administrators to save as many gyms as possible, while all of its shops will eventually close.