Maintenance
CDS scheduled maintenance
Resolved Apr 29, 2026 at 10:00pm UTC
Maintenance ended
1 previous update
CDS scheduled maintenance
Resolved Apr 27, 2026 at 10:00pm UTC
Maintenance ended
1 previous update
CDS scheduled downtime
Resolved Mar 29, 2026 at 4:45am UTC
HMRC has scheduled maintenance to CDS, and will be unavailable.
Scheduled maintenance on GB Safety & Security service (ENS)
Resolved Mar 28, 2026 at 11:59pm UTC
From HMRC:
Due to scheduled maintenance on the Safety and Security GB (S&S GB) service, you may experience delays in receiving responses to declarations from 8pm to 11:59pm on Saturday 28 March 2026.
We advise that where possible, you should submit declarations and retrieve responses before the scheduled downtime period.
We apologise for any inconvenience this may cause.