At Norton & Associates our role is to help establish what’ s on your site, and how it can be dealt with, in accordance with current regulations. We offer walkover or detailed surveys to establish the presence of plants such as the Himalayan Balsam, Japanese Knotweed, Giant Hogweed, Rhododendron Ponticum and various Cotoneaster species,listed under Schedule 9 of the Wildlife and Countryside Act 1981.