Long known for its combative stance with local taxi regulators, Uber has faced a stream of top-level executive departures over issues from sexual harassment to data privacy to driver working conditions, which forced its board to remove Kalanick as CEO in June. In recent months, London's transport regulator stripped Uber of its license to operate citing the company's failure to deal with public safety and security issues, although Uber is appealing against the decision and the new CEO has held talks with Transport for London to resolve the stand-off.