Prices updated daily — 23 October 2026
Product type overview
protein bars sits within Biscuits & Cakes, part of Snacks, Biscuits & Confectionery. On this page you compare 451 products from 9 UK supermarkets: Aldi, ASDA, Co-op, Iceland, Morrisons, Ocado, Sainsbury's, Tesco and Waitrose. The lowest unit price for protein bars is £3.47/kg at Sainsbury's. In total, 21 variants of protein bars are compared (different pack sizes and compositions). All prices are normalised to the same unit (per kilogram, per litre or per piece) so that packs of different sizes can be compared fairly — a larger pack is not automatically the best value. The ranking below shows, per variant, which supermarket currently has the sharpest price, including own-label products alongside national brands. Prices refresh daily from the retailers' own public price lists, so you never see stale offers when planning your weekly shop. Allsupers uses no affiliate links or paid placement; the ranking is purely price-based and updated from public data.
Cheapest protein bars
Compare 441 products priced per kilo across 9 supermarkets (451 in total)
protein bars — compare prices across 9 supermarkets
Myprotein
Myprotein Layered Triple Chocolate Fudge 12x60g
720 g
£3.47/kg
at 1 supermarket
Unbranded
Flapjax Chocolate Flavour Coating Protein Flapjack Bar 120g
120 g
£6.67/kg
at 1 supermarket
GOLDEN BRIDGE
Caramelised Biscuit Protein Filled Breakfast Bars
200 g
£7.45/kg
at 1 supermarket
GOLDEN BRIDGE
Cookies & Cream Protein Filled Breakfast Bars
200 g
£7.45/kg
at 1 supermarket
Skinny Dream
Skinny Dream Choc, Peanut & Caramel Bars 5 x 24g
120 g
£8.33/kg
at 2 supermarkets
Skinny Whip
Skinny Whip 5 x 20g Chocolate Hazelnut Multipack Bars
100 g
£9.50/kg
at 3 supermarkets
Skinny Whip
Skinny Whip Mint & Dark Chocolate Bars
100 g
£10.00/kg
at 1 supermarket
Skinny Whip
Skinny Whip Toffee Chocolate Bars
100 g
£10.00/kg
at 1 supermarket
Skinny Whip
Skinny Whip Double Chocolate Bars
100 g
£10.00/kg
at 1 supermarket
Eat Natural
Eat Natural Crunchy Nut Bars Protein Packed with Peanuts and Chocolate 20 x 45g
900 g
£11.98/kg
at 1 supermarket
Skinny Brands
Skinny Brands Mallo Vanilla Flavour Bars 5 x 18g
90 g
£12.22/kg
at 1 supermarket
GOLDEN BRIDGE
Chocolate Protein Peanut Bars
160 g
£12.44/kg
at 1 supermarket
My Protein
Muller MyProtein Mixers Strawberry Cream Yogurt and Vanilla Biscuits 140G
140 g
£12.50/kg
at 1 supermarket
My Protein
Muller MyProtein Mixers Banana Split Yogurt and Chocolate Crunch 140g
140 g
£12.50/kg
at 1 supermarket
Nature Valley
Nature Valley Protein Big Pack Peanut & Chocolate Cereal Bars 8 x 40g (320g)
320 g
£14.81/kg
at 2 supermarkets
NATURE VALLEY
Nature Valley Protein Peanut and Chocolate 8x 40g
320 g
£14.84/kg
at 1 supermarket
Nature Valley
Nature Valley Protein Salted Caramel Nut Cereal Bars 4 x 40g
160 g
£15.62/kg
at 2 supermarkets
Nature Valley
Nature Valley Protein Peanut & Chocolate Cereal Bars 4 x 40g
160 g
£15.62/kg
at 6 supermarkets
Nature Valley
Nature Valley Protein Salted Caramel Nut Cereal Bars
160 g
£15.62/kg
at 2 supermarkets
Nature Valley
Nature Valley Limited Edition Protein Coffee & Chocolate Cereal Bars 4x40g
160 g
£15.62/kg
at 1 supermarket
Nature Valley
Nature Valley Protein Variety Pack 4 X 40G
160 g
£15.62/kg
at 2 supermarkets
EAT NATURAL
Eat Natural Fruit & Nut Protein Bars with Peanuts, Almonds & Salted Caramel 3 x 40g
120 g
£16.67/kg
at 2 supermarkets
Nakd
Nakd Protein Bars Cocoa Hazelnut
135 g
£16.67/kg
at 1 supermarket
Nakd
Nakd Protein Bars Peanut Butter
135 g
£16.67/kg
at 1 supermarket
EAT NATURAL
Eat Natural Protein Fruit & Nut Bars - Peanuts & Dark Chocolate 3 x 40g
120 g
£16.67/kg
at 3 supermarkets
Eat Natural
Eat Natural Protein Packed Cereal Bar Salted Caramel & Nuts Multipack
120 g
£16.67/kg
at 1 supermarket
Nature Valley
Nature Valley 4 x 36g Protein + Fibre Coconut & Almond Flavour Bars
144 g
£17.36/kg
at 3 supermarkets
Skinny Brands
Skinny Brands Protein Salted Caramel Bars 5 x 20g
100 g
£17.70/kg
at 1 supermarket
Kellogg's
Kellogg's High Protein Almond and Salted Caramel Flavour snack bars 4x35g
140 g
£17.86/kg
at 1 supermarket
Kellogg's
Kellogg's High Protein Almond and Dark Chocolate snack bars 4x35g
140 g
£17.86/kg
at 1 supermarket
TREK
Trek Protein Flapjacks with Lotus Biscoff 3x50g
150 g
£18.33/kg
at 3 supermarkets
Nature Valley
Nature Valley Protein Salted Caramel Nut Cereal Bars
480 g
£19.79/kg
at 1 supermarket
Pip & Nut
Pip & Nut Protein Dark Chocolate Peanut Bars
138 g
£19.93/kg
at 1 supermarket
Pip & Nut
Pip & Nut Protein Peanut Butter Bars
138 g
£19.93/kg
at 1 supermarket
Buttermilk
Buttermilk Caramel Nougat Choccy Bar 50g
50 g
£20.00/kg
at 3 supermarkets
Warrior
Warrior Raw Protein Flapjack-Chocolate Orange
75 g
£20.00/kg
at 1 supermarket
The Chia Charge
Chia Charge Soya Protein Crispies 80%
500 g
£20.00/kg
at 1 supermarket
Warrior
Warrior Raw Protein Cherry Bakewell 75g
75 g
£20.00/kg
at 1 supermarket
Pip & Nut
Pip & Nut Protein Caramel Almond Bars
135 g
£20.37/kg
at 3 supermarkets
Perkier
Perkier Salted Caramel Bar
105 g
£20.48/kg
at 1 supermarket
Tribe
Tribe Protein & Focus Choc Brownie 60g
60 g
£20.83/kg
at 4 supermarkets
Bio&Me
Bio&Me Protein Oat Bar Blueberry 3x40g
120 g
£20.83/kg
at 3 supermarkets
Tribe
Tribe Protein & Focus Peanut Butter Choc Chip 60g
60 g
£20.83/kg
at 5 supermarkets
Bio&Me
Bio&Me Cocoa Protein Bar 3 x 40g
120 g
£20.83/kg
at 3 supermarkets
TRIBE
TRIBE Protein & Focus Peanut Butter Blondie 60g
60 g
£20.83/kg
at 4 supermarkets
Bio&Me
Bio&Me Apricot & Almond Fibre + Protein Bars 3x40g
120 g
£20.83/kg
at 1 supermarket
Perkier
Perkier Crunchy Peanut Protein bars
105 g
£20.95/kg
at 1 supermarket
Perkier
Perkier Cacao & Orange Protein Bars
105 g
£20.95/kg
at 1 supermarket
Pip & Nut
Pip & Nut Peanut Butter Protein Bars 3 x 46g
138 g
£21.38/kg
at 3 supermarkets
Pip & Nut
Pip & Nut Dark Chocolate Peanut Protein Bars 3x46g
138 g
£21.38/kg
at 3 supermarkets