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/international-data-transfers-uk.php

@@ -224,7 +224,7 @@ $breadcrumbs = [
                 <section class="article-cta">
                     <h2>Expert Guidance for International Data Transfers</h2>
                     <p>Navigating international data transfer requirements requires expertise in both legal frameworks and technical implementation. UK Data Services provides comprehensive support for transfer impact assessments, SCC implementation, and ongoing compliance monitoring to ensure your international data flows remain compliant and secure.</p>
-                    <a href="/contact" class="cta-button">Get Transfer Compliance Support</a>
+                    <a href="/#contact" class="cta-button">Get Transfer Compliance Support</a>
                 </section>
             </div>