Copilot is grounded in the Bing index, so the usual cause is simple and unglamorous: weak or absent Bing visibility. Most UK firms have optimised for Google for years and never claimed Bing Webmaster Tools. The enterprise version also draws on a customer’s internal data, which you cannot influence at all.

The short version

Why this happens

Copilot is the most straightforward of the six to diagnose, because the dependency is explicit. It is grounded in Microsoft’s search index. If Bing does not have you, or ranks you poorly for the query, Copilot will not surface you.

That is unglamorous and it is usually the whole answer. A decade of UK search marketing has concentrated almost entirely on Google, for the obvious reason that Google holds the overwhelming share of UK search. The practical consequence is that a great many firms have never claimed Bing Webmaster Tools, never submitted a sitemap to Bing, and have no idea whether their site is indexed there properly.

Bing is not a smaller Google. It ranks differently, weights differently, and has its own indexing quirks. A page that ranks first in Google can be absent from Bing entirely. Because almost nobody in the UK optimises for it deliberately, it is also frequently less competitive, which makes this one of the few genuinely cheap wins in AI visibility.

The enterprise version is a different problem. Microsoft 365 Copilot grounds not only in web content but in the customer’s own tenant: their emails, documents, SharePoint and Teams history. If a procurement lead asks their internal Copilot about suppliers, part of that answer comes from their own records of who they have worked with. You cannot optimise into somebody else’s tenant. What you can do is make sure that whatever they already hold about you is accurate, which is a sales and account management job rather than a marketing one.

Why it is worth the effort despite lower consumer share. Copilot sits inside Windows, Office and Edge, where business users already are. The buyer asking Copilot a supplier question at their desk is frequently further through a decision than the equivalent consumer query elsewhere.

How to check it yourself

  1. Search your key terms in Bing, not Google. This is the diagnostic and most people have never done it.
  2. Search site:yourdomain.com in Bing to see how much of your site is indexed at all. The answer is often “much less than you assumed”.
  3. Check whether you have a Bing Webmaster Tools account. If nobody knows, you do not.
  4. Ask Copilot your category question and see who it names.
  5. Check robots.txt for Bingbot, and confirm no firewall rule is blocking it.

What to do about it

  1. Claim Bing Webmaster Tools and submit your sitemap. Free, quick, and the single highest return action on this page. You can import settings from Search Console.
  2. Fix whatever the Bing crawl reports shows. It surfaces issues Google’s tools do not.
  3. Use IndexNow. Bing supports it, and it gets new and updated pages picked up quickly. It is one of the few places you can genuinely accelerate indexing.
  4. Do not assume Google work transfers. Track Bing visibility separately.
  5. For enterprise deals, make sure your existing customers hold accurate records of you, since that is what their internal Copilot will draw on.

The full method is in how to appear in Microsoft Copilot and Copilot in enterprise AI search.

Platform behaviour changes. This page reflects how Copilot worked in August 2026 and is reviewed quarterly.

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