Who is this useful for?

Shoppers prioritising certification

If sustainability is your starting point, look for the MSC ecolabel on the product you intend to buy. Then compare the portion size and packing medium rather than assuming certification settles every other choice.

First-cupboard shoppers

If you want tuna for several simple meals, compare pack count and drained weight so you know how much tuna each option provides. Check sustainability markings separately; pack size does not establish sourcing.

Quick-lunch shoppers

For sandwiches, salads or jacket potatoes, a no-drain format can remove a preparation step. Check the portion size, packing medium and instructions for any leftovers.

What matters when choosing tinned tuna?

Concern What to check Who this matters to
Sourcing credentials Look for the MSC ecolabel on the exact tin or multipack. Check any catch-method claim separately. If I want a sustainability claim I can check on the pack, independent certification comes before choosing a flavour or format. About 36% of consumers put that sourcing check first.
Amount in each pack Compare the stated drained weight and the number and size of tins. When stocking a first cupboard for several meals, I need to know how much usable tuna a pack contains. For about 29% of consumers, that is the primary concern.
Preparation Check whether the tuna needs draining and whether the container is easy to open; read its after-opening instructions. If lunch needs to come together with little preparation, a no-drain portion can make the format more relevant than a larger tin. Roughly 21% of consumers prioritise that convenience.
Ingredients and medium Read the ingredients, fish allergen declaration and nutrition information on the exact product. For a recipe or dietary requirement, I need to know whether the tuna comes in water, brine or oil and what the label says it contains. About 14% of consumers make those details their first check.

Tinned tuna buying mistakes to avoid

  • Applying a retailer-wide claim to every tin

    A seafood-sourcing policy or range-level statement does not establish the certification of every individual tuna product. Asda’s published sourcing statement, for instance, covers wild-caught fish sourced for its stores rather than certifying a particular tin.

    Check the MSC ecolabel and any catch-method wording on the product you select.

  • Assuming equal-sized multipacks contain equal amounts of tuna

    Pack count and tin size do not tell you the drained weight. That matters when planning how many portions a first cupboard shop will provide.

    Compare the declared drained weights on packs that use the same basis.

  • Treating every packing medium as interchangeable

    Water, brine and oil products can have different ingredients and nutrition information. The Princes spring-water and John West sunflower-oil products listed by Joybuy, for example, carry different fat figures on their product pages.

    Choose a medium for the meal you are making, then read the exact product’s ingredients and nutrition panel.

  • Opening a large tin without a plan for leftovers

    After-opening storage instructions matter if one tin provides more than you will use at once. M&S, Princes and John West product examples instruct shoppers to refrigerate leftovers and consume them within two days.

    Check your pack’s instructions before opening it and choose a portion size you can use accordingly.

Brands and retailer ranges to consider

Sainsbury's

An own-label range to examine if you want both an MSC label and a stated catch method.

  • Sainsbury's said its own-label canned tuna was MSC-certified and pole-and-line caught; the Marine Stewardship Council described its own-brand range as fully MSC-labelled in May 2026.
  • Those range statements do not replace checking the label and ingredients on the particular pack.

Tesco

An own-brand range to consider alongside other tuna products stocked by the retailer.

  • The Marine Stewardship Council described Tesco’s own-brand tuna range as fully MSC-labelled in May 2026.
  • That description applies to the own-brand range, not automatically to third-party products on the same shelf.

Princes

A brand with several tuna formats, including chunks, steaks and sandwich tuna.

  • The Marine Stewardship Council reported in May 2026 that Princes had reached certification across its own-brand tuna. Princes also says it can trace its canned tuna to the original boat.
  • Confirm the certification marking and packing medium on the exact Princes product you choose.

John West

A range to examine when a no-drain portion suits a quick meal.

  • A Sainsbury's listing identifies the John West No Drain Tuna Chunks with a Little Spring Water 3 x 100g product as MSC-certified. A separate Joybuy listing makes that claim for a sunflower-oil No Drain product.
  • The spring-water and sunflower-oil products are different variants; check the label, ingredients and medium of the one you buy.

M&S

An own-brand option for shoppers interested in a stated pole-and-line catch method.

  • M&S describes its spring-water tuna chunks as pole-and-line caught and sourced under its Forever Fish policy.
  • That product claim and wider retailer policy are not substitutes for checking the individual pack’s labels and ingredients.

Asda

A retailer whose wider seafood policy can provide context when assessing its tuna products.

  • Asda says its wild-caught fish sourcing aims to include MSC-certified fisheries or fisheries progressing through a registered improvement project.
  • The policy does not establish that a particular Asda tinned-tuna product carries an MSC ecolabel; inspect that pack separately.

Joybuy tinned tuna for a first food shop

This no-drain spring-water multipack is an option for quick meals when you also want to check for an MSC mark on the exact pack.

John West No Drain Tuna Chunks in Springwater, 3 x 100g

John West No Drain Tuna Chunks in Springwater, 3 x 100g

The no-drain format suits a lunch that needs little preparation. This pack contains three 100g portions in spring water. Sainsbury's identifies the matching named product as MSC-certified; check for the ecolabel on the pack you receive. Follow the pack’s instructions for any tuna left after opening.

View on Joybuy

Questions about sustainable tinned tuna

What should I check first when choosing sustainable tinned tuna?

Look for the MSC ecolabel on the exact tin or multipack if independently certified sourcing is your priority. The Marine Stewardship Council reported that 138 of 271 shelf-stable tuna products available in the UK carried its label in February 2026, so it can serve as a practical first filter. Then check the pack size and medium for your meals.

Does pole-and-line caught mean MSC-certified?

No. Pole-and-line describes a catch method, while the MSC ecolabel identifies certification under a separate scheme. Sainsbury's has made both claims for its own-label canned tuna, but check the particular product for each claim rather than assuming one establishes the other.

Should I choose tuna in spring water, brine or oil?

Choose the packing medium that suits your recipe, and compare the ingredients and nutrition panels of the specific products. Oil-packed and spring-water tuna need not have the same fat content, while salt information is worth checking on any variant rather than inferring it from the medium.

What should I do with tuna left after opening a tin?

Follow the storage instructions on that product’s pack. M&S, Princes and John West examples instruct shoppers to refrigerate opened tuna and use it within two days; their container instructions can differ, so check yours before storing leftovers.