SEO content expansion: compliance guide body, 2 new blog articles, schema

- web-scraping-compliance-uk-guide: filled 7 missing body sections (ToS, IP,
  CMA, best practices, risk matrix, documentation, industry-specific)
  now ~54KB of substantive legal compliance content
- New: blog/articles/web-scraping-lead-generation-uk.php (March 2026)
- New: blog/articles/ai-web-scraping-2026.php (March 2026)
- predictive-analytics-customer-churn: description updated for new title
- index.php: web-scraping-companies added to footer nav
- BreadcrumbList JSON-LD added to data-scraping and web-scraping-companies pages
- sitemap-blog.xml: new articles added

sitemap-blog.xml

@@ -272,4 +272,18 @@
     <changefreq>monthly</changefreq>
     <priority>0.7</priority>
   </url>
+
+    <url>
+        <loc>https://ukdataservices.co.uk/blog/articles/web-scraping-lead-generation-uk</loc>
+        <lastmod>2026-03-08</lastmod>
+        <changefreq>monthly</changefreq>
+        <priority>0.7</priority>
+    </url>
+
+    <url>
+        <loc>https://ukdataservices.co.uk/blog/articles/ai-web-scraping-2026</loc>
+        <lastmod>2026-03-08</lastmod>
+        <changefreq>monthly</changefreq>
+        <priority>0.7</priority>
+    </url>
 </urlset>