Amazon to take drone delivery to 500 US towns and cities, when will the UK follow?

Amazon is dramatically ramping up its drone delivery operation in the US, with plans to bring Prime Air to nearly 500 towns and cities by the end of the year. But UK shoppers may have to wait longer for a rollout on anything approaching the same scale.
The company is preparing a sixfold expansion of the service across America, which is currently operated from 11 locations spanning states including Arizona, Florida, Michigan, Texas and Nebraska.
New launches are planned around Chicago, Atlanta, C