An aerial photography company has created a map of all the trees in the country, which it says could prove vital in monitoring ash dieback disease.

Bluesky International, of Coalville, used photographic and infrared images taken from the air and combined them with height data to produce the 3D map of trees across England and Wales.

The firm said the map would be regularly updated so it could be used to monitor the effects of the disease which is threatening ash trees.

It is also planning to set up a web portal so experts can add the species of each tree to the map.