F
Post-quantum TLS readiness
homeoffice.gov.uk
Critical issue to fix first
Short answer
Yes. As of 2026-11-03, homeoffice.gov.uk negotiates the hybrid post-quantum key exchange X25519MLKEM768 over TLSv1.3 (Quantum Aether grade F).
| Grade | F |
|---|---|
| Key exchange | X25519MLKEM768 |
| Post-quantum | yes |
| TLS | TLSv1.3 |
| Hosting network | Fastly, Inc. |
| Tranco rank | #6006 |
| Country | 🇬🇧 United Kingdom: #5/26 (62.8%) |
From our weekly tracker of the top 10,000 sites, scanned on 2026-11-03 · /adoption
Show your readiness on your site
Markdown
[](https://ather-quatum.cloud/?domain=homeoffice.gov.uk)