APEM is the UK's largest dedicated environmental consultancy, providing aquatic ecological services, offering consultancy, laboratory services and field surveys for both freshwater and marine environments in the UK and worldwide. Our clients include water companies, power companies, engineering consultancies, regulators, national and local government. APEM has dedicated consultants plus field survey and invertebrate taxonomy teams, as well as a high resolution aerial survey capability for riverine habitat mapping and for offshore bird surveys for windfarms.