I guess the question is whether you can extrapolate what has happened in one port out to the rest of the UK fishing industry. For balance here are articles giving perspective from Cornwall, the East Coast of England (apologies for the headline)and Scotland. What do you think of the detail within it?
https://www.thegrocer.co.uk/fish/how...663179.article
https://www.express.co.uk/news/polit...-market-update
https://inews.co.uk/inews-lifestyle/...-dream-1391517
To be fair all this ping pong is over an extremely emotional and locally important sector but one that is relatively unimportant to the UK's GDP. The Office of Budgetary Responsibilities forecast (dirty word I know) of a 4% hit to GDP as a consequence of the friction in the great UK/EU "free trade" deal and the absence of the services sector from it still holds true for them after their analysis of the first year of "freedom". If it's not fishing then the pain is going to be felt somewhere else based on the Government's own body.