Formerly a majority owner of the business, Simon agreed with administrators he would buy the business almost as soon as it slid into administration.
He said: “Ever since I opened the first Monsoon store in Beauchamp Place in 1973, this business has been my passion and my life, and I did not want to see it fall victim to this unprecedented crisis.”
The firm had insisted a turnaround plan was going well after it negotiated a company voluntary arrangement with landlords.
However while the business was trying to improve, all of its stores were forced to close as Covid-19 swept the country.