Live · updated hourly
The GEO Index · United Kingdom
The publishers and platforms AI models reach for when answering United Kingdom-market questions, ranked by citation share, with weekly movement.
Rolling 4 weeks: 38,841 citations · 14,394 model responses · every named domain seen across ≥ 2 independent projects
This week's movers
Citation-share change, week commencing 2026-09-28 vs 2026-10-05. Minimum 25 citations in both weeks and a 0.2pp move to qualify; domains newly added to monitoring don't count as movers.
Gaining
theguardian.com
0.4% → 1.5%
▲ +1.1pp
expertreviews.co.uk
0.3% → 1.1%
▲ +0.8pp
which.co.uk
2.0% → 2.7%
▲ +0.7pp
instagram.com
0.5% → 1.1%
▲ +0.6pp
techradar.com
0.3% → 0.7%
▲ +0.4pp
wikipedia.org
0.5% → 0.8%
▲ +0.4pp
amazon.co.uk
0.3% → 0.7%
▲ +0.4pp
reddit.com
4.3% → 4.4%
▲ +0.2pp
Declining
moneysupermarket.com
2.8% → 0.4%
▼ -2.4pp
gocompare.com
1.8% → 0.4%
▼ -1.4pp
moneysavingexpert.com
1.8% → 0.5%
▼ -1.3pp
moneyhelper.org.uk
1.9% → 0.9%
▼ -1.0pp
shopping.google.com
2.8% → 2.3%
▼ -0.5pp
aviva.co.uk
0.8% → 0.3%
▼ -0.4pp
gov.uk
1.7% → 1.3%
▼ -0.4pp
mumsnet.com
0.7% → 0.4%
▼ -0.3pp
Most-cited websites · United Kingdom
Top 50 domains by share of all citations in the rolling window. The trend column is the weekly share trajectory.
| # | Domain | Share | Citations | Trend |
|---|---|---|---|---|
| 1 | reddit.com | 4.1% | 1,585 | |
| 2 | youtube.com | 3.8% | 1,492 | |
| 3 | facebook.com | 2.3% | 882 | |
| 4 | moneysupermarket.com | 2.2% | 861 | |
| 5 | which.co.uk | 1.9% | 734 | |
| 6 | shopping.google.com | 1.8% | 708 | |
| 7 | gov.uk | 1.8% | 693 | |
| 8 | moneysavingexpert.com | 1.4% | 561 | |
| 9 | gocompare.com | 1.4% | 555 | |
| 10 | moneyhelper.org.uk | 1.4% | 544 | |
| 11 | carwow.co.uk | 1.2% | 476 | |
| 12 | postoffice.co.uk | 1.0% | 371 | |
| 13 | aviva.co.uk | 0.8% | 321 | |
| 14 | whatcar.com | 0.8% | 300 | |
| 15 | quora.com | 0.8% | 294 | |
| 16 | wikipedia.org | 0.7% | 279 | |
| 17 | linkedin.com | 0.7% | 268 | |
| 18 | nhs.uk | 0.7% | 264 | |
| 19 | comparethemarket.com | 0.7% | 264 | |
| 20 | uswitch.com | 0.7% | 254 | |
| 21 | legalandgeneral.com | 0.6% | 246 | |
| 22 | citizensadvice.org.uk | 0.6% | 244 | |
| 23 | forbes.com | 0.6% | 240 | |
| 24 | instagram.com | 0.6% | 238 | |
| 25 | autotrader.co.uk | 0.6% | 235 | |
| 26 | abi.org.uk | 0.6% | 234 | |
| 27 | theguardian.com | 0.6% | 228 | |
| 28 | rac.co.uk | 0.6% | 226 | |
| 29 | confused.com | 0.5% | 201 | |
| 30 | autoexpress.co.uk | 0.5% | 197 | |
| 31 | nih.gov | 0.5% | 178 | |
| 32 | surepetcare.com | 0.4% | 174 | |
| 33 | vitality.co.uk | 0.4% | 166 | |
| 34 | petplan.co.uk | 0.4% | 160 | |
| 35 | expertreviews.co.uk | 0.4% | 160 | |
| 36 | google.com | 0.4% | 158 | |
| 37 | lv.com | 0.4% | 156 | |
| 38 | admiral.com | 0.4% | 156 | |
| 39 | fca.org.uk | 0.4% | 152 | |
| 40 | reassured.co.uk | 0.4% | 149 | |
| 41 | mumsnet.com | 0.4% | 147 | |
| 42 | independent.co.uk | 0.4% | 144 | |
| 43 | financial-ombudsman.org.uk | 0.4% | 142 | |
| 44 | techradar.com | 0.4% | 139 | |
| 45 | trustpilot.com | 0.4% | 136 | |
| 46 | medium.com | 0.3% | 128 | |
| 47 | thecarexpert.co.uk | 0.3% | 126 | |
| 48 | amazon.co.uk | 0.3% | 118 | |
| 49 | sainsburys.co.uk | 0.3% | 116 | |
| 50 | tiktok.com | 0.3% | 115 |
The race for the top
Where the leading sources sat against each other, week by week. Rank space makes every crossing an event.
Figure 1The race for the top of the index
Data table
| Series | 21 Sept | 28 Sept | 5 Oct | 12 Oct |
|---|---|---|---|---|
| reddit.com | 1 | 1 | 1 | 2 |
| youtube.com | 2 | 2 | 2 | 3 |
| facebook.com | 4 | 5 | 4 | 4 |
| moneysupermarket.com | 6 | 3 | 6 | 1 |
| which.co.uk | 3 | 6 | 3 | 5 |
| shopping.google.com | 5 | 4 | 5 | 6 |
5 places gained: moneysupermarket.com, #6 → #1 (12 Oct)
Methodology
- What's counted: every citation/source URL returned by citation-capable AI models for United Kingdom-market projects across the rolling 4 ISO weeks, aggregated from every analysis run on BrandInsightAI. Citations deduplicate to one registrable domain per model response.
- Quality gate: a domain must appear across ≥ 2 distinct projects to be named; shares are computed against ALL citations in scope, so the gate hides names, never distorts percentages.
- Movers: week-over-week comparisons use the two most recent COMPLETE ISO weeks (2026-09-28 → 2026-10-05); the in-progress week is excluded because it refreshes hourly, and a domain must clear the citation floor in BOTH weeks, so a newly monitored category entering the dataset never shows up as a gainer.
- Freshness: the snapshot behind this page recomputes every hour. All figures are measured, never estimated.
Where next
This board answers "which websites does AI cite?". These answer the questions that come next — which brands it recommends, which sources each model prefers, and how any of it is counted.
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Journal
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Reference
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How every number is measured: real AI answers, counted not estimated, with sample sizes and limitations stated on every page.
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