Ash dieback expected to cost British economy nearly £15bn

Biggest cost of tree disease will be loss of benefits such as clean air and water, study finds

An invasive fungal disease killing ash trees will cost the British economy nearly 15bn, a study has found.

Ash dieback, which is lethal to European ash trees, originated in Asia and is thought to have been brought to the UK on imported ash trees some years before it was first identified in Britain in 2012.