Online fashion retailer Boohoo has called on Mishcon de Reya’s former white collar head to lead an independent review of its U.K. supply chain, amid growing concern over the treatment of workers in its supply chain factories where its clothes are produced.

Boohoo – among the U.K.’s most prominent ‘fast fashion’ retailers – faces allegations of malpractice, poor working conditions, and underpayment of workers, which came to light following an investigation by The Sunday Times.