Housebuilders supply only half of promised nature-friendly features, survey finds

On the 42 completed housing estates inspected 83% of hedgehog highways had not been provided. Photograph: Colin Varndell/Alamy

Nearly half of the nature-friendly enhancements promised by developers building new homes have failed to materialise, according to a study of almost 6,000 new houses.

Developers are failing to keep legally binding pledges to boost wildlife when building new homes, according to the survey by University of Sheffield academics for Wild Justice.