Why is Grimsby's smoked fish special?

Fenland celery has recently joined a select list of only fifty-five British foods to achieve the same EU protection as champagne, stilton and Melton Mowbray pork pies. But what difference will this status realistically make to the people who grow it? Sheila Dillon investigates the longer term impact of PGI status on another iconic English product, Grimsby Traditional Smoked Fish. She visits Grimsby fish market to meet the owner of the only remaining Grimsby-based fishing fleet, Andrew Allard, the chief executive of Grimsby Fish Merchants Association Steve Norton, and Richard Enderby, whose family have been smoking fish for generations.