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A/B testing

Optimizely market share in the UK

Optimizely runs on 0.5% of UK websites in our sample (54 of 11,909). Market share by country, top sites using it and technologies it is paired with.

0.5%
Share in United Kingdom
54 / 11,909
0
sites in Tranco top 1K
0 in top 10K
#248,681
median Tranco rank
Tranco
<0.1%
Among local business websites
8 / 21,114
16
frequent companions
Google Tag Manager

By market

  1. United Kingdom0.5%54
  2. Global0.6%436
  3. Netherlands0.3%24
  4. Italy0.2%15
  5. Spain0.4%16
  6. Japan0.1%13
  7. Latin America<0.1%20

Trend

Often used with

  1. Google Tag ManagerTag managers85%×2
  2. BootstrapCSS frameworks39%
  3. OneTrustCookie consent (CMP)37%×6.7
  4. ReactWeb frameworks35%×5.2
  5. CloudflareCDN35%
  6. Next.jsWeb frameworks31%×6.3
  7. jQueryJavaScript libraries31%
  8. ASP.NETWeb frameworks24%×3.4
  9. Tailwind CSSCSS frameworks22%×2.1
  10. TrustpilotReviews17%×1.9

Top sites using Optimizely All 54 sites

TrancoSiteAlso usesHosting
12,656rhs.org.uk ASP.NETBootstrapCloudflareCloudflare Bot ManagementCloudflare Web AnalyticsGoogle Tag Manager Cloudflare
13,917virginmediao2.co.uk Google Cloud CDN / GFEGoogle Tag ManagerNext.jsReactSpeedCurve LUXStoryblok Google Cloud
19,541o2.co.uk Azure Front Door / CDNGoogle Cloud CDN / GFEGoogle Tag ManagerNext.jsReactSpeedCurve LUX Microsoft Azure
22,068featurespace.co.uk Adobe Experience ManagerCloudflareCloudflare Bot ManagementEnvoyGoogle Tag ManagerNext.js Amazon Web Services
24,778ageuk.org.uk ASP.NETAzure App ServiceCloudflareGoogle Tag ManagerModernizr Episerver As
24,963nspcc.org.uk Alpine.jsASP.NETCloudflareCloudflare Bot ManagementGoogle FontsGoogle Tag Manager Cloudflare
49,823game.co.uk Akamai Bot ManagerAkamaiAlgoliaBootstrapGoogle Tag ManagerjQuery Akamai
57,961studio.co.uk Akamai Bot ManagerAkamaiBootstrapGoogle Tag ManagerNext.jsOneTrust Akamai
62,306ii.co.uk Amazon CloudFrontGoogle Tag ManagerNext.jsOneTrustReact Amazon Web Services
65,356architectsjournal.co.uk Adobe Experience Platform TagsGoogle AdSensecore-jsGoogle Marketing Platform (DV360/CM360)Font AwesomeGoogle Fonts Amazon Web Services
70,750furniturevillage.co.uk BazaarvoiceBootstrapCloudflareCloudflare Web AnalyticsGoogle Marketing Platform (DV360/CM360)Google Tag Manager Amazon Web Services
76,995ajbell.co.uk BootstrapAmazon CloudFrontDrupalEnvoyFont AwesomeGoogle Tag Manager Amazon Web Services
94,470talktalk.co.uk Angular 16.2.12ContentfulEnvoyfluctGoogle Tag ManagerjsDelivr F5
106,548thejockeyclub.co.uk ASP.NETAzure App ServiceBootstrapCloudflareGoogle Tag ManagerjsDelivr Episerver As
119,290alpinetrek.co.uk CloudflareCloudflare Bot ManagementGoogle Cloud CDN / GFEGoogle Tag ManagerNew RelicOneTrust Cloudflare
119,454purplebricks.co.uk Azure Front Door / CDNContentfulCookiebot (Usercentrics)Google Tag ManagerNext.jsReact Microsoft Azure
122,236axa.co.uk ASP.NETCloudflareCloudflare Web AnalyticsGoogle Tag ManagerjQuery 3.5.1Swiper Episerver As
130,867tapi.co.uk BootstrapCloudflareCookiebot (Usercentrics)Font AwesomeGoogle Tag Managerimpact.com Cloudflare
163,914ramsayhealth.co.uk Adobe FontsASP.NETAzure App ServiceBootstrapCloudflareGoogle Tag Manager Episerver As
177,013bestwaywholesale.co.uk cdnjsMicrosoft ClarityCivic Cookie ControlGoogle Tag ManagerHotjarjQuery 3.7.1 Ukfast
189,556hiscox.co.uk AcquiaBootstrapCloudflareCloudflare Bot ManagementCloudflare Web AnalyticsGoogle Marketing Platform (DV360/CM360) Amazon Web Services
200,663barratthomes.co.uk ASP.NETBootstrapGoogle Tag ManagerImperva (Incapsula)OneTrustGoogle reCAPTCHA Imperva
209,228axahealth.co.uk Azure App ServiceCloudflareCrownpeak (Evidon)Google Tag ManagerjQuery Episerver As
226,057claridges.co.uk Azure Front Door / CDNNext.jsOneTrustReactTailwind CSS Episerver As
229,256nfumutual.co.uk Azure App ServiceBootstrapCloudflareGoogle Tag ManagerjQueryOneTrust Episerver As

Our crawler: 11,909 sites · United Kingdom · updated 23 Oct 2026 · Methodology

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