LONDON, June 17 : Adoption of artificial intelligence has reached a "tipping point" in Britain, as companies move from experimentation to large-scale deployment and start seeing returns, a Google Cloud executive said on Wednesday. Businesses and government bodies that were testing AI tools a year ago are now using them to run more complex processes and improve productivity, Maureen Costello, Google Cloud's vice president for the United Kingdom, Ireland and Sub-Saharan Africa, told Reuters in an