TMTPOST -- Britain's financial regulator is taking longer than usual to approve Shein’s initial public offering (IPO) due to a review of the company’s supply chain oversight and legal risks, following challenges from an advocacy group representing China’s Uygur population, sources familiar with the matter said. The UK’s Independent Anti-Slavery Commissioner, part of the Ministry of the Interior, has also raised concerns regarding Shein’s labor practices within government circles, citing allegations related to its suppliers. Shein, the Singapore-based fast-fashion giant known for its budget-friendly clothing like $5 tops and $10 dresses, filed confidentially with the UK’s Financial Conduct Authority (FCA) in early June for a listing in London. The company sells its products in 150 markets globally, with most of its goods manufactured in China. In addition to awaiting FCA approval, Shein is also seeking clearance from China’s securities regulator for the London listing, with sources suggesting that the Chinese approval is expected to follow the FCA’s decision.