Fast-fashion retailer Shein Group plans to launch its IPO in London by April.The company ended its attempt at a U.S. IPO due to concerns about its connections to China and alleged human rights violations in its supply chain.Shein aims to gain regulatory approvals in Britain, potentially aided by a visit from U.K. finance minister Rachel Reeves.The U.K.'s Financial Conduct Authority has opened the door for Shein to go public in the country, citing the importance of company disclosures.