As of 13 Oct 2026, the biggest grocery price gap in the UK for 12–18 Oct 2026 is Birds Eye Potato Waffles — 36% cheaper per kg at Sainsbury's than Tesco (£2.64/kg vs £4.14/kg).
Prices updated 13 Oct 2026
Biggest grocery price gaps — week 42, 2026
12–18 Oct 2026. The 2 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
−36%cheaper - 2
−34%cheaper
