Port Health and Local Authorities in England, Wales and Northern Ireland are the regulators of pollution from certain types of industrial processes (A2 and B in England and Wales and C in Northern Ireland) under the Pollution Prevention and Control Act 1999 and the regulations made under it. The Environment Agency is the regulator for more damaging polluting activities (A1 processes). The Pollution Protection Control regime is an integrated approach to pollution control assessing a broad range of environmental impacts including emissions to air, land and water, waste produced, and noise pollution.
More Information can be found in the link below:
Environment Agency Website