Chinese robotaxis are due to be on the streets of London next year after the US ride-hailing companies Lyft and Uber announced tie-ups with Beijing-based Baidu to deploy its self-driving technology. Lyft is the third firm to announce plans to introduce self-driving taxis to the UK capital next year, after Uber and Waymo, the main operator of robotaxis in the US. Its ride-hailing services are the major rival to Uber’s in the US and Canada, and this year Lyft expanded into Europe after acquiring the Freenow app in the summer.…