Birdseye invented this product that was originally sold as "herring savouries"
He also noted that the frozen 
seafood sold in New York was of a lower ... To test the market he produced a 
control product made from cod: so we had herring savouries v cod... [DOC] [TLE] Birds Eye Fish Fingers - The Great British Diet [PAR] Frozen, finger-shaped fish product consisting of flakes of white fish (originally cod
) ... not in the UK but the US with an American inventor, Clarence Birdseye.