Crab, Scallops, Prawns - yes, I can accept them as "Fresh Local Seafood"
Eels - so positively British it makes you want to roll up your trousers and put a hankie on your head
Shark - maybe. Dogfish (known also as "Huss" or "Rock Salmon") is technically a member of the shark family I suppose.
Tuna - unlikley but possible.
Swordfish - Naaaah. There is no current record for swordfish being caught in British waters, but clearly that needs updating. Presumably they are all being hooked and eaten in Bognor Regis before their weights are recorded and sent to the folks at Anglers Times.
I suggest we all send in this evidence to their current collator of fish records to correct this anomaly :firstname.lastname@example.org