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Cheapest Mustard in the UK

Prices updated 13 October 2026 · 138 products across 7 supermarkets

The best-value mustard in the UK right now is Rajah 100g Whole Black Mustard Seeds Spice at Sainsbury's (£0.00).
138Products Compared
7Supermarkets
£2.25Lowest /Each

We compare mustard 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 mustard is genuinely cheapest. Prices update daily.

1Rajah 100g Whole Black Mustard Seeds SpiceRajah 100g Whole Black Mustard Seeds SpiceSainsbury'sBest value£0.002Tesco Smoked Ham & Mustard SandwichTesco Smoked Ham & Mustard SandwichTesco£2.25/each£2.253Morrisons Honey & Mustard Sauce 495gMorrisons Honey & Mustard Sauce 495gMorrisons£2.42/kg£1.204Sainsbury's Dijon Mustard 185gSainsbury's Dijon Mustard 185gSainsbury's£2.43/kg£0.455ASDA Dijon Mustard 185gASDA Dijon Mustard 185gAsda£2.43/kg£0.456Tesco Dijon Mustard 185GTesco Dijon Mustard 185GTesco£2.43/kg£0.457Morrisons Dijon Mustard 185gMorrisons Dijon Mustard 185gMorrisons£2.43/kg£0.458Sainsbury's Wholegrain Mustard 180gSainsbury's Wholegrain Mustard 180gSainsbury's£2.44/kg£0.449Tesco Wholegrain Mustard 180GTesco Wholegrain Mustard 180GTesco£2.44/kg£0.4410BRAMWELLS Wholegrain Mustard 0.2 KGBRAMWELLS Wholegrain Mustard 0.2 KGAldi£2.45/kg£0.4911BRAMWELLS English Mustard 0.2 KGBRAMWELLS English Mustard 0.2 KGAldi£2.45/kg£0.4912BRAMWELLS Dijon Mustard 0.2 KGBRAMWELLS Dijon Mustard 0.2 KGAldi£2.45/kg£0.4913BRAMWELLS Dijon Mustard 200 gBRAMWELLS Dijon Mustard 200 gAldi£2.45/kg£0.4914BRAMWELLS English Mustard 200 gBRAMWELLS English Mustard 200 gAldi£2.45/kg£0.4915BRAMWELLS Wholegrain Mustard 200 gBRAMWELLS Wholegrain Mustard 200 gAldi£2.45/kg£0.4916Morrisons Wholegrain Mustard 175gMorrisons Wholegrain Mustard 175gMorrisons£2.51/kg£0.4417Morrisons English Mustard 185gMorrisons English Mustard 185gMorrisons£2.97/kg£0.5518ASDA Wholegrain Mustard 165gASDA Wholegrain Mustard 165gAsda£3.03/kg£0.5019ASDA Mild French Mustard 185gASDA Mild French Mustard 185gAsda£3.24/kg£0.6020Sainsbury's English Mustard 185gSainsbury's English Mustard 185gSainsbury's£3.51/kg£0.6521Tesco English Mustard 185gTesco English Mustard 185gTesco£3.51/kg£0.6522KTC Edible Mustard Oil Blend 1 LitreKTC Edible Mustard Oil Blend 1 LitreAsda£3.58/litre£3.5823ASDA English Mustard 180gASDA English Mustard 180gAsda£3.61/kg£0.6524KTC Edible Mustard Oil Blend 1LKTC Edible Mustard Oil Blend 1LMorrisons£4.25/litre£4.25
See The Live Mustard Comparison →

Cheapest Mustard: FAQ

Where is the cheapest mustard in the UK?

Right now the best value mustard is Rajah 100g Whole Black Mustard Seeds Spice at Sainsbury's, £0.00. SmartShelf ranks mustard by price per unit across 7 supermarkets, updated daily.

Which supermarket is cheapest for mustard?

We compare mustard 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 mustard 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.