Trees of Britain is an Android application developed by NatureBritain that offers an extensive guide to identifying and learning about the trees of Britain. The application covers all native and naturalized species, as well as commonly seen varieties and cultivars in public parks and gardens.

The trees are listed both alphabetically and by family, with each tree presented with a description, botanical data, key identification points, cross-references to similar species, and a set of clickable thumbnails showing various aspects of the species. The application also features a photographic key to Spring, Summer, Autumn, and Winter features to help users identify trees in the field.

One of the unique features of Trees of Britain is the interactive quiz that enables users to test and improve their knowledge of the trees. Furthermore, NatureBritain has pledged to donate a proportion of the app revenues to support woodland conservation, education, and research projects in the UK.

Overall, Trees of Britain is a comprehensive and user-friendly guide that would be an excellent resource for anyone interested in trees and their identification.