Britain has warned it will not tolerate attempts by foreign states to intimidate or harass individuals on its soil, as it summoned China’s ambassador after two men linked to Hong Kong’s London trade office were convicted of spying on activists. The United Kingdom’s Foreign, Commonwealth & Development Office confirmed on Saturday that Ambassador Zheng Zeguang had been summoned the previous day after the British court’s verdict in the national security case. Bill Yuen Chung-biu, manager of the...