LONDON, June 30 : Almost 1,700 British investors are suing Binance and founder Changpeng Zhao for at least £150 million ($200 million), alleging the crypto trading platform sold them risky, complex derivative products without regulatory authorisation. The claimants, some of whom said they had lost tens of thousands of pounds, allege Binance entities knowingly sold investments such as leveraged products, which can amplify gains or losses, from late 2019 and promoted them in breach of the