Cheapest Mustard in the UK

Prices updated 15 August 2026 · 118 products across 7 supermarkets

The best-value mustard in the UK right now is ASDA Wholegrain Mustard 165g at Asda — £2.42/kg (£0.40).

118Products Compared

7Supermarkets

£2.42Lowest /Kg

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.

#	Product	Store	Price	Per Unit
1	ASDA Wholegrain Mustard 165g	Asda	£0.40	£2.42/kg
2	Morrisons Honey & Mustard Sauce 495g	Morrisons	£1.20	£2.42/kg
3	Sainsbury's Dijon Mustard 185g	Sainsbury's	£0.45	£2.43/kg
4	Sainsbury's English Mustard 185g	Sainsbury's	£0.45	£2.43/kg
5	ASDA Dijon Mustard 185g	Asda	£0.45	£2.43/kg
6	Tesco Dijon Mustard 185G	Tesco	£0.45	£2.43/kg
7	Morrisons Dijon Mustard 185g	Morrisons	£0.45	£2.43/kg
8	Sainsbury's Wholegrain Mustard 180g	Sainsbury's	£0.44	£2.44/kg
9	Tesco Wholegrain Mustard 180G	Tesco	£0.44	£2.44/kg
10	BRAMWELLS Wholegrain Mustard 0.2 KG	Aldi	£0.49	£2.45/kg
11	BRAMWELLS English Mustard 0.2 KG	Aldi	£0.49	£2.45/kg
12	BRAMWELLS Dijon Mustard 0.2 KG	Aldi	£0.49	£2.45/kg
13	Morrisons Wholegrain Mustard 175g	Morrisons	£0.44	£2.51/kg
14	Morrisons English Mustard 185g	Morrisons	£0.55	£2.97/kg
15	ASDA Mild French Mustard 185g	Asda	£0.60	£3.24/kg
16	Tesco English Mustard 185g	Tesco	£0.65	£3.51/kg
17	KTC Edible Mustard Oil Blend 1 Litre	Asda	£3.58	£3.58/litre
18	ASDA English Mustard 180g	Asda	£0.65	£3.61/kg
19	KTC Edible Mustard Oil Blend 1L	Morrisons	£4.25	£4.25/litre
20	Prymat Mustard Deli 185g	Sainsbury's	£0.80	£4.32/kg
21	Prymat Mild Mustard 185G Clubcard £3.24	Tesco	£0.80	£4.32/kg
22	Prymat Classic Mustard 180g	Asda	£0.78	£4.33/kg
23	Prymat Mustard Sarepska 180g	Sainsbury's	£0.80	£4.44/kg
24	Prymat Sarepska Mustard 180G	Tesco	£0.80	£4.44/kg

See The Live Mustard Comparison →

Cheapest Mustard: FAQ

Where is the cheapest mustard in the UK?

Right now the best value mustard is ASDA Wholegrain Mustard 165g at Asda, £0.40 (£2.42/kg). 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 Asda 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.