HMRC have informed us that due to scheduled maintenance, the CDS TDR Service will be unavailable for the period below:
From: 12:00 Tuesday 11th August 2026 To: 16:00 Tuesday 11th August 2026 (4hrs, UK time)
There will be a complete outage during this period.
Kind regards, ChamberCustoms team
Posted Aug 06, 2026 - 16:43 BST
This scheduled maintenance affects: ChamberCustoms Systems (Customs Declarations (SGS) - TDR) and HMRC Systems (HMRC CDS (Import/Export declarations) - TDR).