Wire all pages to navigation and fix broken links

- Add services, locations, and resources to footer navigation across all pages
- Update footer in 22+ files with consistent navigation structure
- Add service pages: competitive-intelligence, price-monitoring, data-cleaning
- Add location pages: london, manchester, birmingham
- Update all sitemaps (sitemap.php, sitemap.xml, sitemap-services.xml, sitemap-index.xml)
- Fix broken /contact links (changed to /#contact)
- Fix broken contact.php references (changed to /quote)
- Fix faq-enhanced.php with correct service links
- Fix london.php file permissions (600 -> 644)

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

sitemap-services.xml

@@ -13,10 +13,22 @@
 
     <!-- Service Pages -->
     <url>
-        <loc>https://ukdataservices.co.uk/services/data-cleaning.php</loc>
-        <lastmod>2025-06-08</lastmod>
+        <loc>https://ukdataservices.co.uk/services/competitive-intelligence.php</loc>
+        <lastmod>2025-12-08</lastmod>
         <changefreq>monthly</changefreq>
-        <priority>0.8</priority>
+        <priority>0.9</priority>
+    </url>
+    <url>
+        <loc>https://ukdataservices.co.uk/services/price-monitoring.php</loc>
+        <lastmod>2025-12-08</lastmod>
+        <changefreq>monthly</changefreq>
+        <priority>0.9</priority>
+    </url>
+    <url>
+        <loc>https://ukdataservices.co.uk/services/data-cleaning.php</loc>
+        <lastmod>2025-12-08</lastmod>
+        <changefreq>monthly</changefreq>
+        <priority>0.9</priority>
         <image:image>
             <image:loc>https://ukdataservices.co.uk/assets/images/icon-data-processing.svg</image:loc>
             <image:title>Data Cleaning & Validation Services</image:title>
@@ -24,6 +36,26 @@
         </image:image>
     </url>
 
+    <!-- Location Pages -->
+    <url>
+        <loc>https://ukdataservices.co.uk/locations/london.php</loc>
+        <lastmod>2025-12-08</lastmod>
+        <changefreq>monthly</changefreq>
+        <priority>0.8</priority>
+    </url>
+    <url>
+        <loc>https://ukdataservices.co.uk/locations/manchester.php</loc>
+        <lastmod>2025-12-08</lastmod>
+        <changefreq>monthly</changefreq>
+        <priority>0.8</priority>
+    </url>
+    <url>
+        <loc>https://ukdataservices.co.uk/locations/birmingham.php</loc>
+        <lastmod>2025-12-08</lastmod>
+        <changefreq>monthly</changefreq>
+        <priority>0.8</priority>
+    </url>
+
     <!-- Quote/Contact Pages -->
     <url>
         <loc>https://ukdataservices.co.uk/quote.php</loc>