CDS Release 4.8.0 to Impact on NCTS Weekend of 14th and 15th June 2025

BY:

Niamh O'Connor
11 June 2025

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HMRC has advised that the planned release of CDS version 4.8.0 will impact the New Computerised Transit System (NCTS), and declarations may be delayed if not submitted in good time before the CDS downtime scheduled for 22:30 on Saturday, June 14th. 

NCTS will be available during the rollout of the CDS upgrade, but declarations may be queued from the late evening of Saturday, June 14th, and not released until the early hours of Sunday, June 15th. 


HMRC have released the following details: 

  • Declarations submitted into the New Computerised Transit System (NCTS) may be queued from 10.30pm on Saturday, June 14th, 2025, to 1.00am on Sunday, June 15th, 2025. 
  • NCTS will be available during this time and any declarations queued will be held and processed once the maintenance activity has concluded. 



HMRC recommends that declarations be submitted well in advance of Saturday's downtime to avoid any delay in movements. They apologise for any inconvenience. 


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