The recall comes after the UK’s Food Standards Agency issued a warning about a batch of potatoes, which could potentially contain metal shreds after a piece of machinery broke on the production line.
FSA Chief Operating Officer Jason Feeney said: “The FSA is advising anyone who bought these products not to eat them and return them to the shop where they were purchased.
“The pieces of metal which may be present are potentially harmful, so people should check whether they have bought any of the products.”
Whilst Waitrose and Morrisons were both forced to recall one product each, it has been confirmed by Sainsbury’s that over 40 of their ready meals could potentially be contaminated.
The recalled ready meals include both adult and children's portions, including the 'by Sainsbury's' range of Kids' Sausage & Mash and a Kids' Fish Pie.
We have checked their website, which lists the following products (all with date codes up to and including use by 21st May).
If you have bought one of these products, you are advised to return it to your nearest Sainsbury's store, where you will receive a full refund.
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by Sainsbury's Classic Cumberland Pie 450g
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by Sainsbury's Classic Liver & Bacon with Mash 450g
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by Sainsbury's Classic Bangers & Mash 450g
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by Sainsbury's Classic Braised Steak & Mash 450g
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by Sainsbury's Rumbledethumps 450g
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by Sainsbury's Classic Chicken White Wine 450g
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by Sainsbury's Vegetarian Cottage Pie 400g
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by Sainsbury's Classic Sausage & Mash Yorkshire 430g
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by Sainsbury's Classic Cottage Pie 450g
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by Sainsbury's Classic Cottage Pie 900g
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by Sainsbury's Classic Shepherd's Pie 450g
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by Sainsbury's Classic Shepherd's Pie 900g
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by Sainsbury's Basics Salmon Cottage Pie 300g
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by Sainsbury's Classic Cumberland Fish Pie 450g
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by Sainsbury's Classic Cod in Parsley Sauce 420g
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by Sainsbury's Kids' Sausage & Mash 250g
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by Sainsbury's Good Pulled Pork 380g
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by Sainsbury's Kids' Fish Pie 300g
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Taste The Difference Cottage Pie 400g
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Taste The Difference Luxury Shepherd's Pie 400g
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Taste The Difference Steak au Poivre 450g
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Taste the Difference Cottage Pie 800g
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Taste The Difference Vegetable & Berry Lentil Pie 400g
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Taste The Difference Fish Pie 400g
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Taste The Difference Fish Pie 800g
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Basics Fish Pie 300g
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Basics Cottage Pie 300g
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Basics Shepherd's Pie 300g
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Basics Liver & Mash 300g
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Basics Sausage & Mash 300g
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Basics Family Cottage Pie 1.5kg
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Basics Cottage Pie 1.5kg
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Café JS Cottage Pie 340g
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Café Children's Sausage & Mash 250g x 4
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Be Good To Yourself Cottage Pie 450g
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Be Good To Yourself Shepherd's Pie 450g
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Be Good To Yourself Chicken & Mushroom Pie 400g
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Be Good To Yourself Braised Beef & Mash 400g
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Be Good To Yourself Fish Pie 450g
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Be Good To Yourself Chicken Dinner 350g
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Be Good To Yourself Sausage & Root Veg Mash 400g
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Be Good To Yourself Nutritionally Balanced Ham Hock & Sweet Potato Mash 400g
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Be Good To Yourself Nutritionally Balanced Minced Beef Casserole 400g
For Waitrose and Morrisons shoppers, it has also been advised that you return Waitrose Creamy Golden Smoked Haddock in Cheese Sauce, and Morrisons Carrot & Swede Mash, to your nearest store for a full refund.
A spokesperson for Sainsbury’s said: “We have been made aware that a very small piece of metal has been discovered in a single pack of our Be Good To Yourself Fish Pie.
“As a precautionary measure and in the interest of customer safety, we are recalling all potato-containing ready meal lines produced by the supplier who makes this product.”
Meanwhile a spokesperson from Waitrose added: "The safety of our products is of paramount important to us and so as a precaution we have withdrawn three date codes and we apologise to our customers for any inconvenience caused."