3D survey of the country using LIDAR

Read on the train earlier in the week that the Environment Agency are going to be using LIDAR to survey the whole country.
They have already surveyed large areas, but this will be at the highest level of detail, and show features which are as small as one metre.
You can follow their GeoMatics team on Twitter here.

I would love to go up with one of these aerial survey planes, such as the two operated by the Ordnance Survey use, to spend the day seeing the country from above and capturing it in great detail and chatting to the people involved to follow the process through to the changes that might result on the final map.
When the two CESSNA planes are operating, you can follow their paths on FlightRadar using their call signs G-TASK and G-FIFA

The "lidar" - light detection and ranging - technology, measures the distance between an aeroplane and the ground to build up a picture of the terrain, and can be used to detect sudden landscape changes.
Currently about 75 per cent of the country is mapped but with only sporadic coverage of upland areas. The new project, beginning over winter, will cover all of England’s national parks, areas of outstanding natural beauty (AONBs) and sites of special scientific interest (SSSIs) such as the Peak District and the Yorkshire Dales.

Some of this data is already available for subscribers to ArcGIS Online.

Image: the first few stages in making a map face out of bits of old OS maps, or exam extracts. Make a simplified version of your face with an app to reduce it to the key lines, and trace that to create a number of smaller areas. Use tracing paper to mark through on the map, cut out and stick over the areas to produce a map collage effect.