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/property-data-aggregation-success.php

@@ -324,7 +324,7 @@ $breadcrumbs = [
                 <section class="article-cta">
                     <h2>Transform Your Property Data Operations</h2>
                     <p>This case study demonstrates the transformative potential of automated property data aggregation. UK Data Services specialises in building scalable, accurate data collection systems that enable property businesses to compete effectively in today's data-driven market.</p>
-                    <a href="/contact" class="cta-button">Discuss Your Property Data Needs</a>
+                    <a href="/#contact" class="cta-button">Discuss Your Property Data Needs</a>
                 </section>
             </div>