Original research · June 2026
UK Grocery Pricing — The 2026 Data Study
Eight headline findings from our daily price tracking across UK supermarkets and major retailers. All data is original and free to cite with attribution to Assistant De Venté (assistantdevente.com).
+91%
UK olive oil price increase since 2022
A litre of supermarket extra virgin olive oil has gone from £4.50 (2022) to £8.59 (2026). Back-to-back Spanish droughts cut harvests by half.
£18.34
Average gap between cheapest and most expensive Big Four supermarket basket
Tracked across 8 weeks (April–May 2026) on an identical 40-item weekly shop. Aldi was cheapest in 7 of 8 weeks; Tesco was most expensive in 5 of 8.
5.8p
Cheapest cost-per-nappy in the UK
Aldi Mamia Ultra Dry (size 4). Premium brands cost 2–3x more. A child in nappies for two years goes through ~4,000 nappies — that's £200–£350 of difference.
£345
Annual saving from switching Nespresso branded to supermarket-compatible pods
A 3-pod-a-day drinker pays £455/year for Nespresso branded vs £110/year for Lidl Bellarom. Blind tastings show no consistent preference.
1 in 5
Tesco Clubcard prices that are the same or lower at Sainsbury's/Asda anyway
Source: Which? 2024 investigation. Clubcard pricing is not automatically the cheapest available option.
~£70/month
Average UK household food waste
Equivalent to £840/year per household thrown away. The largest single lever for grocery saving is buying less, not buying cheaper.
18%
Asda Cashpot rewards that expire unredeemed
Asda's own published figure. Loyalty schemes only save money if you actually remember to redeem them.
~£900
Annual saving from switching Big Four shop to Aldi or Lidl
Based on a typical £92 weekly basket. The single highest-impact change a UK shopper can make to reduce food spend.
Methodology
All prices were captured from each retailer's own public website using a consistent delivery postcode (Manchester M1), recorded between 09:00 and 11:00 on the same day each week. The basket comparison used an identical 40-item shop across 8 consecutive weeks (April–May 2026).
Per-nappy and per-pod calculations divide the headline shelf price by the unit count on the pack as listed by the retailer. Olive oil price history is sourced from our own weekly price tracker (2024 onwards) and Office for National Statistics monthly food-price data (2022–2023).
Where we cite third-party figures (Which? Clubcard analysis, Asda Cashpot expiry, UK food waste), these are linked in the corresponding blog articles.
For journalists & bloggers
You're welcome to cite any of the figures above in articles, social posts, or research with attribution to Assistant De Venté and a link to assistantdevente.com. For raw data, methodology notes, or to request a price-tracker breakdown of a specific category, email hello@assistantdevente.com.
Want the full analysis?
Each statistic above links to a deeper article on our blog.
Read the full UK pricing blog