Oak Processionary Moth, a lesson in control failure (Part 2)

Part 2 - Exactly twenty years on from when oak processionary moth (OPM) ‘fetched up’ in West London, where are we now, or more to the point where aren’t we now? There are several dimensions to consider including the impact on human health as well as the debilitating effect on the English oak, the main target of OPM in the British Isles.