GOV.UK SSL certificate status
Valid — 99 days until expiry(gov.uk)
This page shows the GOV.UK SSL certificate as served by gov.uk, read from a live TLS handshake by an independent CertPost probe and rechecked hourly: expiry, issuer, hostname coverage, the full chain, and the negotiated protocol.
Last checked 2026-09-20 07:48 UTC. CertPost is not affiliated with GOV.UK.
Certificate details
Hostnames this certificate covers
www.gov.uk, *.businesslink.gov.uk, *.direct.gov.uk, *.publishing.service.gov.uk, *.cabinet-office.gov.uk, assets.digital.cabinet-office.gov.uk, service.gov.uk, data.gov.uk, dfid.gov.uk, cabinet-office.gov.uk, api.gov.uk, www.data.gov.uk, gov.uk
Certificate chain as served
Common questions
Is the GOV.UK SSL certificate expired?
At the last check, the certificate gov.uk serves was within its validity period. It expires on 2026-12-28, 99 days from that check.
When does the GOV.UK SSL certificate expire?
The certificate gov.uk is currently serving expires on 2026-12-28 (99 days from the last check). Large services rotate certificates long before that date.
Who issued the GOV.UK SSL certificate?
The certificate was issued by GlobalSign RSA OV SSL CA 2018.
How is this checked?
A CertPost probe opens a real TLS connection to gov.uk on port 443 and reads the certificate the server presents, the same way a browser does. The result is cached and refreshed hourly.
GOV.UK rotates certificates without downtime. Your own domains are the ones that expire quietly — watch 3 free, no card.
Monitor your certificatesOr run a one-off check with the free SSL checker.