How often ChatGPT and Claude read which.co.uk before they make a recommendation
For each assistant, country and kind of business: the share of answers that read which.co.uk, the share that cited it, and its rank among the sites read there.
- ChatGPT: answers that read it
- 1.5%
- Claude: answers that read it
- 1.9%
- Cited as a source
- 0.8%
- Rank among all sources
- 38
In October 2026, ChatGPT and Claude answered 3,256 questions about businesses, software and brands with web search on. They read which.co.uk in 1.6% of them and gave it as the source of a recommendation in 0.8%. It is number 38 among all sources. It ranks highest in the United Kingdom, where 21% of answers read it, and for car insurance companies, where 7.5% did.
By assistant
Each assistant’s share of its own answers with web search on.
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<a href="https://aigrow.gg/ai-sources/site/which.co.uk"><img src="https://aigrow.gg/og/ai-sources-site-which.co.uk.jpg" width="1200" height="630" alt="How often ChatGPT and Claude read which.co.uk and where it ranks highest, October 2026" style="max-width:100%;height:auto"></a>
<p><a href="https://aigrow.gg/ai-sources/site/which.co.uk">Source: AIGROW AI Source Map, October 2026</a></p>By country
Countries with at least 5 answers where which.co.uk was read, the most read first. Rank is its place among the sources read there. No answer read it in 17 other countries with enough answers.
| Country | Read | Rank | Cited | Answers |
|---|---|---|---|---|
| United KingdomCited 12% · 228 answers | 21% | 5 | 12% | 228 |
| IrelandCited 0% · 102 answers | 3.9% | 35 | 0% | 102 |
| AustraliaCited 0% · 153 answers | 0.7% | 228 | 0% | 153 |
By kind of business
Kinds of business with at least 5 answers where which.co.uk was read, across every country, the most read first. No answer read it for 29 other kinds of business with enough answers.
| Kind of business | Read | Rank | Cited | Answers |
|---|---|---|---|---|
| Car brandsCited 2.5% · 40 answers | 10% | 10 | 2.5% | 40 |
| Energy suppliersCited 5.1% · 39 answers | 7.7% | 8 | 5.1% | 39 |
| SupermarketsCited 5.1% · 39 answers | 7.7% | 10 | 5.1% | 39 |
| Car insurance companiesCited 5.0% · 40 answers | 7.5% | 7 | 5.0% | 40 |
| PlumbersCited 3.7% · 108 answers | 7.4% | 12 | 3.7% | 108 |
| ElectriciansCited 4.6% · 108 answers | 6.5% | 13 | 4.6% | 108 |
| RoofersCited 3.7% · 108 answers | 6.5% | 15 | 3.7% | 108 |
| Electronics retailersCited 5.1% · 39 answers | 5.1% | 8 | 5.1% | 39 |
| Moving companiesCited 0.9% · 108 answers | 3.7% | 52 | 0.9% | 108 |
| VeterinariansCited 0% · 108 answers | 3.7% | 55 | 0% | 108 |
| Online brokersCited 2.6% · 39 answers | 2.6% | 26 | 2.6% | 39 |
| Home internet providersCited 2.5% · 40 answers | 2.5% | 57 | 2.5% | 40 |
| Car repair shopsCited 1.9% · 108 answers | 1.9% | 119 | 1.9% | 108 |
| GymsCited 0% · 108 answers | 1.9% | 129 | 0% | 108 |
| Real estate agenciesCited 0% · 108 answers | 0.9% | 279 | 0% | 108 |
What this means for a business
In 3 pairs of a kind of business and a country, more than half of the answers read which.co.uk. For a business in one of them, being listed on which.co.uk is worth checking. Of the answers that read it, 52% also gave it as the source of a recommendation.
plumbers in the United Kingdom: 100%electricians in the United Kingdom: 88%roofers in the United Kingdom: 88%
Questions
- Does ChatGPT read which.co.uk?
- Yes. In October 2026, ChatGPT read a page of which.co.uk in 1.5% of its 2,580 answers with web search on, and gave it as the source of a recommendation in 0.8%.
- Does Claude read which.co.uk?
- Yes. In October 2026, Claude read a page of which.co.uk in 1.9% of its 676 answers with web search on, and gave it as the source of a recommendation in 0.9%.
- Where do AI assistants read which.co.uk most?
- It ranks highest in the United Kingdom, where 21% of answers read it, and for car insurance companies, where 7.5% did.
How this was measured
- The question
- Each assistant was asked the questions a buyer asks, with web search on: about a local trade in a city, or about software or a consumer brand in a country. Every page its searches returned and every page it gave as a source was kept.
- Counting
- A site counts once per answer, however many of its pages the answer read. Read is the share of answers that read at least one page of the site; cited is the share that gave one of its pages as the source of a recommendation.
- Sources
- A site counts as a source only when it appears on 3 or more pages of the Index. Below that it is almost always a business’s own website or a one-off article.
- Edition
- October 2026. 3,256 answers: ChatGPT 2,580, Claude 676.
- Coverage
- Not every assistant has answered on every page yet this month, so read each assistant’s shares next to its own number of answers.
Citing this data
AIGROW, AI Source Map, which.co.uk, October 2026, aigrow.gg/ai-sources/site/which.co.uk. The figures and the data are published under CC BY 4.0: reuse them with a link to this page.
Is your business on the sites the assistants read?
The free scan asks ChatGPT, Claude, Gemini and Grok the questions your customers ask and shows who they name. Check whether your business is on the sites they read before they answer.
Edition October 2026 · data under CC BY 4.0