It looks like the Origin data for www.halfords.com is missing in PageSpeed Insights since September 10, 2024. This usually happens when Google’s Chrome User Experience Report (CrUX) doesn’t have enough real-user data for the domain.

Here are a few possible reasons:

Insufficient traffic – CrUX requires a minimum volume of Chrome users to collect field data. If traffic dropped or Google adjusted its thresholds, it might have stopped collecting Origin-level data. Changes in Google's data collection – Sometimes, domains stop being eligible due to internal Google updates. Meanwhile, www.halfords.ie may still meet the criteria. Site changes – Check if any redirects, security headers (CSP), or site settings changed that could prevent Google from gathering metrics. Delay in CrUX updates – CrUX data is updated monthly, so it may return in the next update. What You Can Do: Check Google Search Console → Look at Core Web Vitals reports to see if field data is available there. Use Lighthouse or WebPageTest → These provide lab data for performance analysis. Wait for CrUX updates → If the issue is temporary, data might return in the next update cycle. If you need Origin-level data urgently, consider using Real User Monitoring (RUM) tools or tracking Web Vitals manually with chrome.web-vitals.

Hope this helps!