Trends · data through September 2026

Grocery & Convenience trends in Slough and Heathrow

Iceflower tracks 1,318 stores from 725 grocery & convenience chains in Slough and Heathrow. Iceland grew fastest over the last year, ahead of Nisa Local and McColl's.

Rankings come from real card and bank transactions across a panel of 130M+ US and EU consumers. We publish relative growth and rankings, never revenue figures. About the data

Tracked chains
725
Tracked stores
1,318
Consumer panel
130M+

Growth ranking

Fastest-growing tracked grocery & convenience chains

Ranked by year-over-year growth of share of tracked local spend. Arrows show movement in the rankings since last year. Each dot in the chart is one tracked chain: bigger market position to the right, faster growth higher up, more tracked stores in a bigger dot. Colors match the store map below. Iceland and Nisa Local sit in the high-growth half.

# Chain YoY growth
RankChainRank movementYoY growth
1 I Iceland logo Iceland ▲1 +18.9%
2 N Nisa Local logo Nisa Local - +18.0%
3 M McColl's logo McColl's - +13.8%
4 S SPAR logo SPAR ▲1 +11.8%
5 M M&S Simply Food logo M&S Simply Food ▲1 +11.2%
6 L Londis logo Londis - +9.3%
7 L Langley Fresh - +8.7%
8 A ALDI logo ALDI - +8.1%
9 S Sainsbury's logo Sainsbury's - +6.3%
10 C Costa Express logo Costa Express - +6.3%
11 A Asda logo Asda - +6.2%
12 C Costcutter logo Costcutter - +6.0%
13 K Kopernik - +4.6%
14 H Hotel Chocolat logo Hotel Chocolat - +4.6%
15 O One Stop logo One Stop ▼1 +4.2%

Store footprint

Store map

1,318 tracked store locations in Slough and Heathrow, colored by category.

Top tracked chains by store count

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