SEO fixes: author bylines, 2025 dates, phone removal, case studies, Companies House

- Assign named authors to all 14 blog articles that defaulted to Editorial Team
- Replace team-based author labels (DevOps Team, Legal Team etc) with named authors
- Update 2025 -> 2026 in ecommerce trends, buyers guide, and python pipeline titles
- Remove phone number (01692 Norfolk) from all pages and schema
- Anonymise unverifiable case study clients (TechElectronics UK, Heritage Bank UK)
- Add clickable Companies House link (08576932) to footer

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

gdpr-compliance.php

@@ -352,7 +352,7 @@ $canonical_url = "https://ukdataservices.co.uk/gdpr-compliance";
         <div class="contact-info">
             <p><strong>Data Protection Officer</strong><br>
             Email: <a href="mailto:dpo@ukdataservices.co.uk">dpo@ukdataservices.co.uk</a><br>
-            Phone: <a href="tel:+441692689150">+44 1692 689150</a></p>
+            Phone: <a href="tel:"></a></p>
             
             <p><strong>General Privacy Enquiries</strong><br>
             Email: <a href="mailto:privacy@ukdataservices.co.uk">privacy@ukdataservices.co.uk</a></p>