As of 4 Oct 2026, the biggest grocery price gap in the UK for 5–11 Oct 2026 is Oral B Advanced Enamel Strengthening Toothpaste — 61% cheaper per 1L at Sainsbury's than Tesco (£36.67/1L vs £93.33/1L).
Prices updated 4 Oct 2026
Biggest grocery price gaps — week 41, 2026
5–11 Oct 2026. The 10 grocery items with the widest per-unit gap between the cheapest supermarket in the UK and the next one. This week is still running, so the list updates with live prices and freezes on Sunday.
- 1
Oral B Advanced Enamel Strengthening Toothpaste
£36.67/1L
Sainsbury'svs£93.33/1L
Tesco£2.75 total · per 1L−61%cheaper - 2
−50%cheaper - 3
−50%cheaper - 4
Sensodyne Clinical Repair Active White Sensitive Toothpaste
£79.33/1LSainsbury'svs£160.00/1LTesco£5.95 total · per 1L−50%cheaper - 5
Birds Eye Crispy Tempura Battered Chicken Breast Steaks
£8.83/1kgSainsbury'svs£17.65/1kgTesco£1.50 total · per 1kg−50%cheaper - 6
−50%cheaper - 7
−50%cheaper - 8
Colgate Advanced White Teeth Whitening Toothpaste
£24.00/1LSainsbury'svs£45.20/1LTesco£3.00 total · per 1L−47%cheaper - 9
−44%cheaper - 10
MOJU Ginger Extra Strength Dosing Bottle Shots
£9.40/1L
Asdavs£16.55/1LSainsbury's£3.95 total · per 1L−43%cheaper