Re: Safe drone use...
IIRC Altitude Angel's product is meant to let drones be flown beyond LOS, as they'd need to be to fulfill Amazon's drone delivery service and the various power cable and pipeline inspection tasks that have been suggested.
As far as I can see, their current offering is little more than a database containing permanently restricted airspace and NOTAMs plus an app and a mapping display tool that let users query the database and graphically display the results of a query.
Beyond that, there are rather vague plans covering everything from geofencing to some sort of sense-and-avoid systems to allow multiple drones to operate in the same airspace. However, I still see no hint of how this is going to provide the collision avoidance services needed to keep drones separated from General Aviation users of Class G airspace, let alone extending it to include controlled airspace like the London CTR. By General Aviation I mean recreational pilots in light planes, microlites, gliders, balloons and, of course, police, military and emergency service aircraft - many of whom do not carry collision avoidance systems and are not in receipt of traffic advisory services. This part of Altitude Angel's offering hasn't changed since they first launched the company and still seems to be ignored by them.