In making his pitch to succeed Theresa May as the next Conservative party leader, and prime minister, Boris Johnson drew heavily on his time as Mayor of London. “You look at what we did in City Hall,” he said. He served two successive terms as mayor: 2008 to 2012 and 2012 to 2016. Mr Johnson…

Image copyright Getty Images Image caption Apple Watch was the most accurate, according to the Which? study Some fitness trackers are inaccurately measuring running distance, according to research from the consumer watchdog Which? It tested 118 trackers using a treadmill to complete the distance of a marathon – 26.2 miles (42km). It found that the…