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>

blog/articles/data-subject-rights-management.php

@@ -198,7 +198,7 @@ $breadcrumbs = [
                 <section class="article-cta">
                     <h2>Need Help Managing Data Subject Rights?</h2>
                     <p>Implementing an effective data subject rights management system requires expertise in both legal compliance and technical implementation. UK Data Services can help you build automated, compliant systems that efficiently handle data subject requests while maintaining the highest standards of data protection.</p>
-                    <a href="/contact" class="cta-button">Get Compliance Support</a>
+                    <a href="/#contact" class="cta-button">Get Compliance Support</a>
                 </section>
             </div>