UK ChatGPT & Perplexity Referral Traffic Tracker

The UK ChatGPT & Perplexity Referral Tracker exists for one reason. AI assistant referral has gone from a curiosity in 2024 to a measurable, high-quality, fast-growing channel in 2026 — and most UK marketing teams still cannot get a defensible number for it from their own analytics. This is the public, citable version.

1. The Q2 2026 headline

AI assistant referral is now the highest-growth-rate organic channel in our UK dataset. Absolute volumes remain a small fraction of Google organic, but the trajectory is steep and the traffic quality meaningfully exceeds Google organic on like-for-like comparisons.

2. Source breakdown

• ChatGPT: 61% of UK AI-referred sessions.
• Perplexity: 21%.
• Google Gemini (incl. Bard legacy): 11%.
• Anthropic Claude: 5%.
• Microsoft Copilot & other: 2%.

ChatGPT's dominance is consistent across sectors. Perplexity over- indexes on commercial research and B2B queries. Gemini over-indexes on Android-native and certain Google Workspace contexts. Claude is small in volume but its referrals to developer-facing UK brands perform unusually well.

3. Conversion quality

The conversion-quality gap is the thing UK marketing leaders should take from this report. AI-referred visitors arrive having already had a substantive conversation about your category. Self-qualified demand has always been the highest-converting demand. AI assistants are the largest new producer of self-qualified demand to arrive in a decade.

4. Share of total non-brand sessions

• Median UK brand in panel: 2.1% of non-brand sessions.
• Leader-cohort UK brand: 6.4%.
• Laggard-cohort UK brand: 0.4%.
• Median 12-month-ago equivalent: 0.3%.

The leader-cohort number is the operationally important one. A 6.4% share of non-brand sessions arriving through a channel converting at ~2× Google organic is no longer a rounding error — it is a meaningful contribution to the organic top of funnel.

5. Why some UK brands are winning AI assistant referral

Examined across the leader cohort, four patterns recur. They publish original UK data the assistants prefer to cite (the same logic that drives this tracker's existence). They have named, schema-marked human experts the assistants treat as reliable. They have structured content explicitly built to be answer-extractable. And they earn mentions on third-party authority sources via Digital PR — which the assistants weight heavily, mirroring how trust propagates in human research behaviour.

6. What we expect through 2026

We expect AI assistant referral to continue compounding at double-digit quarter-on-quarter growth through 2026 and into 2027. We expect Perplexity to grow share of commercial queries faster than its overall share. We expect ChatGPT's referral share to compress modestly as Gemini and Microsoft Copilot continue to embed inside user defaults. We expect AI assistant referral to be a routine analytics dimension in UK marketing dashboards by Q4 2026.

Methodology summary

The tracker is built from anonymised referral data across the Creative Marketing Group UK client panel, normalised by destination domain rather than user agent (which is unreliable for AI assistants). Conversion uplift comparisons are like-for-like landing page level. Confidence interval at the headline growth-rate level is +/-12% at a 95% confidence level. Cross-tabs available via the press room.

Suggested citation: Creative Marketing Research, UK ChatGPT & Perplexity Referral Traffic Tracker, Q2 2026, Creative Marketing Group, April 2026. Available at creativemarketingltd.co.uk/uk-chatgpt-perplexity-referral-tracker.