Shein, a fast fashion retailer, is considering asking British regulators to relax listing rules that require it to sell at least 10% of its shares to the public in its planned London IPO, Reuters quoted sources as saying.If approved, it could be the first time a company has been allowed to list below the 10% requirement on the London Stock Exchange (LSE), according to the report. Shein confidentially submitted an application to the UK's Financial Conduct Authority (FCA) in June 2024 for listing in London.