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Cheapest Frozen Fish in the UK

Prices updated 13 October 2026 · 300 products across 7 supermarkets

The best-value frozen fish in the UK right now is Stamford Street Co. White Fish Steaks x6 520g at Sainsbury's — £1.20/kg (£3.75).
300Products Compared
7Supermarkets
£1.20Lowest /Kg

We compare frozen fish across all 7 major UK supermarkets — Tesco, Sainsbury's, Asda, Morrisons, Waitrose, Aldi and M&S — and rank by price per unit so you can see where frozen fish is genuinely cheapest. Prices update daily.

1Stamford Street Co. White Fish Steaks x6 520gStamford Street Co. White Fish Steaks x6 520gSainsbury'sBest value£1.20/kg£3.752THE FISHMONGER Battered Cod 4 Pack 500 gTHE FISHMONGER Battered Cod 4 Pack 500 gAldi£1.84/kg£3.693THE FISHMONGER Battered Haddock 4 Pack 500 gTHE FISHMONGER Battered Haddock 4 Pack 500 gAldi£1.84/kg£3.694THE FISHMONGER Breaded Cod 4 Pack 500 gTHE FISHMONGER Breaded Cod 4 Pack 500 gAldi£1.84/kg£3.695THE FISHMONGER Chunky Battered Cod 4 Pack 500 gTHE FISHMONGER Chunky Battered Cod 4 Pack 500 gAldi£2.44/kg£4.896THE FISHMONGER Chunky Breaded Cod 4 Pack 500 gTHE FISHMONGER Chunky Breaded Cod 4 Pack 500 gAldi£2.44/kg£4.897Young's Fish Steaks in a Creamy Parsley Sauce x4 560gYoung's Fish Steaks in a Creamy Parsley Sauce x4 560gSainsbury's£2.90/kg£6.508Young's Chip Shop Omega 3 Fish Fillets x4 400gYoung's Chip Shop Omega 3 Fish Fillets x4 400gSainsbury'sNectar £3.25£3.19/kg£5.109THE FISHMONGER Extra Crunchy Gourmet Fish Fillet 0.4 KGTHE FISHMONGER Extra Crunchy Gourmet Fish Fillet 0.4 KGAldi£3.72/kg£1.4910THE FISHMONGER Extra Crunchy Gourmet Fish Fillet 400 gTHE FISHMONGER Extra Crunchy Gourmet Fish Fillet 400 gAldi£3.72/kg£1.4911Stamford Street Co. White Fish Fillets 520gStamford Street Co. White Fish Fillets 520gSainsbury's£4.29/kg£2.2312EVERYDAY ESSENTIALS White Fish Fillets 1kg 1 KGEVERYDAY ESSENTIALS White Fish Fillets 1kg 1 KGAldi£4.29/kg£4.2913Morrisons Savers Fish Fillets 520gMorrisons Savers Fish Fillets 520gMorrisons£4.29/kg£2.2314Birds Eye Battered Cod Fillets x4 400gBirds Eye Battered Cod Fillets x4 400gSainsbury'sNectar £5.50£4.34/kg£6.9515Birds Eye Breaded Cod Fillets x4 400gBirds Eye Breaded Cod Fillets x4 400gSainsbury's£4.34/kg£6.9516Birds Eye Battered Haddock Fillets x4 400gBirds Eye Battered Haddock Fillets x4 400gSainsbury'sNectar £5.50£4.34/kg£6.9517Birds Eye Breaded Haddock Fillets x4 400gBirds Eye Breaded Haddock Fillets x4 400gSainsbury's£4.34/kg£6.9518JUST ESSENTIALS by ASDA Just Essentials by White Fish Fillets 520gJUST ESSENTIALS by ASDA Just Essentials by White Fish Fillets 520gAsda£4.42/kg£2.3019Bay Fishmongers White Fish Fillets 520GBay Fishmongers White Fish Fillets 520GTesco£4.42/kg£2.3020THE FISHMONGER Skinless & Boneless Basa Fillets 0.38 KGTHE FISHMONGER Skinless & Boneless Basa Fillets 0.38 KGAldi£4.71/kg£1.7921THE FISHMONGER Skinless & Boneless Basa Fillets 380 gTHE FISHMONGER Skinless & Boneless Basa Fillets 380 gAldi£4.71/kg£1.7922THE FISHMONGER Lemon & Herb Tempura Basa Fillets 2 Pack 310 gTHE FISHMONGER Lemon & Herb Tempura Basa Fillets 2 Pack 310 gAldi£4.82/kg£2.9923THE FISHMONGER Salt & Pepper Dusted Basa Fillets 2 Pack 310 gTHE FISHMONGER Salt & Pepper Dusted Basa Fillets 2 Pack 310 gAldi£4.82/kg£2.9924JUST ESSENTIALS by ASDA Just Essentials by 4 Breaded White Fish Fillets 500gJUST ESSENTIALS by ASDA Just Essentials by 4 Breaded White Fish Fillets 500gAsda£4.96/kg£2.48
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Cheapest Frozen Fish: FAQ

Where is the cheapest frozen fish in the UK?

Right now the best value frozen fish is Stamford Street Co. White Fish Steaks x6 520g at Sainsbury's, £3.75 (£1.20/kg). SmartShelf ranks frozen fish by price per unit across 7 supermarkets, updated daily.

Which supermarket is cheapest for frozen fish?

We compare frozen fish across Tesco, Sainsbury's, Asda, Morrisons, Waitrose, Aldi and M&S. Today Sainsbury's has the cheapest option, but the ranking updates every day as prices change.

How does SmartShelf compare frozen fish prices?

We list each product's price per unit (£/kg, £/litre or per item) so you compare like for like, and we show loyalty prices such as Clubcard and Nectar where available — free, with no sign-up.