Tackling serious crime. tomorrow, london s ultra low emission zone officially expands to cover every borough of the capital in a bid to stop the most polluting vehicles from driving in town. sport and for a full round up, from the bbc sport centre. let s head straight to new york first where the final tennis grand slam of the season the us open is under way, and the defending women s champion, iga swiatek is among the opening matches at flushing meadows. she s not long started her first round match against rebecca peterson, the world number one on arthur ashe today. elsewhere though we could have an upset, in eighth seed maria sakkari losing to spain s rebeka masarova, who won the first set 6 4. currently 4 3 to masorova in the second.