London - Apple’s spy planes are believed to be equipped with technology developed by defence agencies to guide missile strikes.

Each plane is equipped with multiple cameras taking high-resolution photographs of buildings and landmarks from every possible angle, which are then compiled to make three-dimensional images.

The military-grade images are taken at a height of around 1,600ft, meaning people below are very unlikely to realise they are being photographed.

The cameras can be installed on planes, helicopters or even unmanned drones, although there are safety restrictions about the use of the latter in Britain.

A small plane carrying the cameras can photograph up to 100 square kilometres (38.6 square miles) every hour. - Daily Mail