26/03/2026
🚧 Planned Maintenance – Important Notice for GVMS Users
HMRC will be carrying out scheduled maintenance from:
🕗 8:00pm on 28 March
🕕 to 5:45am on 29 March
During this time, the Customs Declaration Service (CDS) will be unavailable, meaning you won’t be able to:
❌ Add import declarations
❌ Add export declarations
❌ Validate GMRs
The GVMS core system will still be available, but you should complete any declaration‑related tasks before or after the downtime.
Full details are available on GOV.UK:
https://buff.ly/wqeZxxb
If you need help preparing for the downtime, our team is here for you.