Plants can generally be divided into three broad categories:
primary processors: deal with cutting, peeling, gutting and washing fish and shellfish
secondary processors: deal with brining, smoking, freezing, canning and the manufacture of fish products such as fishcakes, breaded fillets and packaged meals
mixed processors: carry out a mixture of these activities
The UK seafood processing industry is one of the largest in the European Union (EU), with a turnover of around €5.3 billion (£3.8 billion) in 2015.