Cheapest Protein Powder in the UK

Prices updated 15 August 2026 · 110 products across 4 supermarkets

The best-value protein powder in the UK right now is The BAKERY at ASDA The Bakery at 2 High Protein Flatbreads at Asda — £0.67/each (£1.34).

110Products Compared

4Supermarkets

£0.67Lowest /Each

We compare protein powder 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 protein powder is genuinely cheapest. Prices update daily.

#	Product	Store	Price	Per Unit
1	The BAKERY at ASDA The Bakery at 2 High Protein Flatbreads	Asda	£1.34	£0.67/each
2	Wow Hydrate Protein Tropical Protein & Vitamin Water 500ml	Morrisons	£1.50	£3.00/litre
3	Nutmeg Home Protein Shaker 600ml	Morrisons	£3.50	£3.50/each
4	Arla Protein Strawberry and Raspberry Flavoured Milk Shake 482ml	Morrisons	£2.20	£4.56/litre
5	Arla Protein Chocolate Milkshake 482ml	Morrisons	£2.20	£4.56/litre
6	Grenade Chocolate Salted Caramel Flavour Protein Shake 330ml	Asda	£2.24	£6.79/litre
7	Grenade Fudge Brownie Flavour Protein Shake 330ml	Asda	£2.24	£6.79/litre
8	Grenade Strawberries & Cream Flavour Protein Shake 330ml	Asda	£2.24	£6.79/litre
9	Grenade White Chocolate Flavour Protein Shake 330ml	Asda	£2.24	£6.79/litre
10	Arla Protein Food To Go Vanilla Hazelnut Meal Replacement Shake 500ml	Morrisons	£3.50	£7.00/litre
11	Optimum Nutrition High Protein Shake Strawberry Flavour 500ml	Asda	£3.70	£7.40/litre
12	Optimum Nutrition High Protein Shake Strawberry Flavour 330ml	Morrisons	£2.75	£8.33/litre
13	Optimum Nutrition Serious Mass Protein Powder Vanilla Flavou...	Sainsbury's	£40.00	£14.71/kg
14	Optimum Nutrition Serious Mass Protein Powder Chocolate Flav...	Sainsbury's	£40.00	£14.71/kg
15	Warrior Raw Protein Flapjack Honey Berry 75g	Morrisons	£1.50	£20.00/kg
16	Warrior Raw Protein Flapjack White Chocolate Cranberry 75g	Morrisons	£1.50	£20.00/kg
17	Warrior Raw Protein Flapjack Red Velvet Cake 75g	Morrisons	£1.50	£20.00/kg
18	Warrior Raw Protein Flapjack Salted Caramel 75g	Morrisons	£1.50	£20.00/kg
19	Novo Protein Pops Salt & Vinegar 45g	Asda	£1.03	£22.89/kg
20	Nakd Protein Bars Cocoa Hazelnut 3 x 45g	Morrisons	£3.30	£24.44/kg
21	Myprotein Impact Diet Whey Cookies & Cream 1KG	Morrisons	£26.00	£26.00/kg
22	Myprotein Impact Diet Whey Chocolate Brownie Flavour 600g	Morrisons	£16.00	£26.67/kg
23	Myprotein Impact Diet Whey Cookies & Cream Flavour 600g	Morrisons	£16.00	£26.67/kg
24	Myprotein Protein Brownie White Chocolate Brownie 75g	Morrisons	£2.00	£26.67/kg

See The Live Protein Powder Comparison →

Cheapest Protein Powder: FAQ

Where is the cheapest protein powder in the UK?

Right now the best value protein powder is The BAKERY at ASDA The Bakery at 2 High Protein Flatbreads at Asda, £1.34 (£0.67/each). SmartShelf ranks protein powder by price per unit across 4 supermarkets, updated daily.

Which supermarket is cheapest for protein powder?

We compare protein powder 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 protein powder 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.