We mostly eat beef and chicken. Fish is pretty minor in our diet.
Is this research or opinion? Including tuna, we eat a lot of fish. I personally eat more fish than beef or chicken, but I acknowledge that those meats will sell more. But fish is not "minor".

The typical person here eats beef or chicken most days, and fish maybe once or twice a week, if that.
I probably eat fish twice a week on average. Twice a week is not "minor". Turkey and lamb is "minor". Pork is probably consumed on a par with fish, and that's largely thanks to sausage.

I've tried looking on the internet and I've given up trying to find a nice pie chart, but I found a bar chart that implies we spend twice as much on meat as we do on fish. That's beef+chick+pork+lamb+turkey+whatever else vs cod+haddock+tuna+plaice+whatever. Of course fish is generally more expensive, but you're mistaken if you think fish is "minor", unless by "minor" you simply mean "less than beef and chicken".

Most of the fish we eat comes from the EU. 20k tonnes of cod last year for example.
Interesting. Any idea how much of the fish comes from UK waters?

Same for our exports, mostly go to the EU. About 25% of our fish exports are salmon that we sell to France.
Oh yeah there's salmon too.

Whether they'll still want it once all the customs paperwork is added and we're threatening to shoot up their fishing fleets is an interesting question.
We'll eat it, salmon is delicious. I don't eat it often because it's so expensive, but perhaps it will become cheaper if there's a surplus. Great.

By the way, did you notice the French had a warship in the English channel recently? The flexing of muscles is not just confined to the UK. It's standard and is for public consumption. Governments want their people to think they're hard and not afraid of rivals. It's not intended to intimidate the other side.

If I were PM, I'd have sent a small boat with two men on it, one armed with a bb gun, and the other armed with a camera. Shoot at the fucker with a pathetic little gun that won't even dent the hull, and laugh as it turns around. Comedy gold that would be.