At least one top executive of the Hong Kong operator of UK-based beauty chain Opatra London has resigned, it emerged on Thursday, after customs officers arrested two of the company’s managers over alleged coercive and misleading sales practices.Meanwhile, the Lux Boutique outlet at Harbour City in Tsim Sha Tsui, which is operated by the same company, was boarded up and locked on Thursday.A check by the South China Morning Post found that Sayles Retail filed a “Notice of Resignation of Company...