China-founded fast-fashion retailer Shein has filed for an IPO in Hong Kong to accelerate the listing process and pressure Britain's regulators to approve its planned London debut, the Financial Times reported on Tuesday.

Shein previously filed to list in London around 18 months prior, but has struggled to receive regulatory approval.

Shein has reportedly filed papers for an initial public offering in Hong Kong, increasing the pressure on UK regulators to not miss out on what could be London's largest stock-market debut in years.