Prices updated daily — 11 June 2026

Product type overview

protein bars sits within Chocolate & Sweets, part of Snacks, Biscuits & Confectionery. On this page you compare 3 products from 6 UK supermarkets: Tesco, Sainsbury's, ASDA, Aldi, Morrisons and Waitrose. The lowest unit price for protein bars is £19.00/kg at ASDA. In total, 1 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 3 products across 6 supermarkets

From £19.00 / kilo

protein bars — compare prices across 6 supermarkets

Buttermilk Caramel Nougat
Save 50p
Waitrose

Buttermilk

Buttermilk Caramel Nougat

50 g

from£1.10£1.60

£22.00/kg

Sainsbury's
Waitrose

at 2 supermarkets

0
Buttermilk Plant-Powered Peanut Nougat Choccy Bar 50g
Tesco

BUTTERMILK

Buttermilk Plant-Powered Peanut Nougat Choccy Bar 50g

50 g

£1.60

£32.00/kg

Tesco

at 1 supermarket

0
Grenade Oreo
Waitrose

Grenade

Grenade Oreo

60 g

£2.90

£48.33/kg

Waitrose

at 1 supermarket

0