9 UK Tinned Mackerel Brands to AVOID (Some Aren't Even Real Mackerel)

Some of Britain's biggest tinned mackerel brands have quietly switched to a completely different species of fish. But are you still getting the omega-3 you're paying for? We investigate 9 UK supermarket mackerel products from Princes, John West, Tesco and more, comparing ingredients, fish species, omega-3 content and value for money to reveal which tins are worth buying and which you should think twice about.