BEIJING—Burberry has lost a Chinese brand ambassador and its hallmark tartan design was scrubbed from a popular video game, becoming the first luxury brand assailed by the Chinese backlash to Western accusations of abuses in Xinjiang. The Chinese regime on Friday sanctioned organizations and individuals in the United Kingdom, days after Britain imposed sanctions for alleged human rights abuses in the western Chinese region. Burberry is a member of the Better Cotton Initiative, a group that promotes sustainable cotton production which said in October it was suspending its approval of cotton sourced from Xinjiang, citing human rights concerns. Award-winning Chinese actress Zhou Dongyu terminated her contract with Burberry as the brand’s ambassador, as Burberry has not “clearly and publicly stated its stance on cotton from Xinjiang,” her agency said on Thursday. The company’s iconic plaid design was also removed from the clothing worn by characters in Tencent Holdings Ltd’s wildly …