Start by benchmarking key metrics before and after you implement changes. Look at page load times, mobile responsiveness scores, and site uptime. Google Analytics and Search Console provide metrics like crawl errors, index coverage, and user engagement (bounce rate, time on site). Over time, you should see improved page load speeds, fewer 404 errors, and better mobile performance. Also track your keyword rankings—particularly for local terms—in tools like Semrush or Ahrefs. If you’ve optimised effectively, you’ll often notice higher placements and more clicks from Essex-based searches. Pay attention to user behaviour signals: do visitors stay longer, view more pages, or convert at higher rates? These shifts suggest your Technical SEO changes aren’t just pleasing search engines—they’re enhancing overall user experience. If issues persist, do further audits to identify any remaining bottlenecks, ensuring your Essex business remains technically sound and ready to welcome customers.