Question to the Department for Environment, Food and Rural Affairs:

To ask the Secretary of State for Environment, Food and Rural Affairs, how many salmon aquaculture sites in England and Wales used (a) formaldehyde, (b) emamectin benzoate, (c) azamethiphos, (d) hydrogen peroxide and (e) deltamethrin treatments for sea lice in each of the last five years.

There are no marine salmon aquaculture sites in England or Wales. Therefore, there are no recorded uses of chemical sea-lice treatments or sea-lice outbreaks.