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Same brand, two AI realities. How Summerhill Health became a top-three citation on Google AI Overviews while three pure-model AI assistants haven't caught up.
Snapshot period: 19 to 26 May 2026.
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| AI assistant | Type | Visibility | At a glance | Brand rank |
|---|---|---|---|---|
| 🔍 Google AI Overviews | Live search | 40.7% (▲13.2%) | 🟩🟩🟩🟩🟩🟩🟩🟩⬜⬜ | Top 3 |
| 💬 ChatGPT Search | Live search | 26.5% | 🟩🟩🟩🟩🟩⬜⬜⬜⬜⬜ | #3 |
| 🤖 ChatGPT (base) | Pure model | 0.3% | ⬜⬜⬜⬜⬜⬜⬜⬜⬜⬜ | #30 |
| 📚 Claude | Pure model | 0.7% | ⬜⬜⬜⬜⬜⬜⬜⬜⬜⬜ | #30 |
| ✨ Gemini | Pure model | 0.3% (▼0.3%) | ⬜⬜⬜⬜⬜⬜⬜⬜⬜⬜ | #30 |
Each square represents 5% visibility across 68 UK private healthcare prompts.
Summerhill Health is a private GP and women's health clinic based in Hale, Greater Manchester, led by Dr Natalie Summerhill. The practice offers menopause care, contraception, blood testing, and specialist women's health consultations. The clinic operates in a competitive local market alongside established providers including Spire Manchester, Pall Mall Medical, and Nuffield Health Manchester.
AI search is not one thing. It's two things, and they behave completely differently.
Live-search AI variants like Google AI Overviews, ChatGPT Search, and Bing Copilot read the actual website when generating an answer. Get the on-page trust signals right and you move those visibility numbers within weeks.
Pure-model AI like ChatGPT base, Claude, and Gemini answers from training data. It updates on model release cycles, which take months at best.
These two categories are usually marketed as the same product. They aren't. A brand can rank in the top three on Google AI Overviews while three of the most-used AI assistants hold variously outdated understandings of what the brand does, at the exact same moment.
Across 68 UK private healthcare prompts tracked weekly, Summerhill Health's performance splits cleanly between the two AI categories.
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Google AI Overviews
Top three brand in the UK private healthcare prompt set. Average visibility 40.7%, up 13.2% week on week. Average position 5.3, improved by 1.1 positions in seven days. All ten top performing prompts return Summerhill at 100% visibility, in positions 1 to 4. summerhillhealth.co.uk earned 41 citations across the week (up 25), ranking #9 by citation rank across all domains cited in the prompt set.
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ChatGPT Search
#3 brand in the UK competitive set. Average visibility 26.5%. Average position 6.8, improved by 0.8. All ten top performing prompts return Summerhill at 100% visibility, in positions 1 to 5. Direct competitors trail by 4 to 7 percentage points.
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| Prompt | AI Overviews | ChatGPT Search |
|---|---|---|
| How to book a private GP appointment near Hale? | Position 2 | Positions 1-5 |
| Can I book a same-day appointment in Altrincham or Hale today? | Position 3 | Positions 1-5 |
| Can I see Dr Natalie Summerhill directly, or will I be given a rotating locum? | Position 2 | Positions 1-5 |
| Cost of a private cervical screening in Manchester | Position 2 | Positions 1-5 |
| How much does a private GP consultation typically cost near Hale? | Position 4 | Positions 1-5 |
| Where can I book a private blood test in Manchester? | Position 4 | Positions 1-5 |
| Private GP services in Hale: what options are available? | Position 3 | Positions 1-5 |
| What is the total cost of the Ziwig Endotest in Manchester? | Position 3 | Positions 1-5 |
Bottom-of-funnel commercial queries. The patients searching them are ready to act.