After undertaking a year-long investigation with Ford and four other mobility specialists on how to build self-driving systems that integrate with London’s existing transport infrastructure, Addison Lee today is announcing the next step in its autonomous strategy. The on-demand ride company — which competes with black cabs, Uber and other car services — announced a deal with self-driving startup Oxbotica to develop autonomous vehicles, with the aim of getting them in service in London by 2021. No financial details are being revealed about the deal.