TikTok Faces Government Restrictions on U.K. Expansion Drive

Boris Johnson’s top advisers may impose restrictions on TikTok’s activities in the U.K., but are likely to stop short of blocking plans by the Chinese-owned social media app to set up an international headquarters in London.

A review led by the prime minister’s chief of staff Eddie Lister is likely to find the app doesn’t pose as big a security threat as Huawei Technologies Co., but may still recommend the government stops the company from moving users’ data out of the country, said a person with knowledge of the discussions who asked not to be identified because the ...