Remove unverified ICO registration and VAT number references

- Remove ICO Registration placeholder from footer
- Remove 'ICO registered' claims from about.php meta description
- Remove 'ICO registered' from web-scraping.php meta description and body copy
- Remove VAT No placeholder from footer

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

includes/footer.php

@@ -91,7 +91,7 @@
                 <div class="footer-copyright">
                     <p>&copy; <?php echo date('Y'); ?> UK Data Services. All rights reserved.</p>
                     <p class="company-details">
-                        Company No: 12345678 | VAT No: GB123456789 | ICO Registration: ZA123456
+                        Company No: 12345678
                     </p>
                 </div>
                 <div class="social-links">