UK NCTS 6 - Phase 1 - What's in it?
- Arne Mielken
- Aug 15, 2025
- 1 min read
UK NCTS 6 - Phase 1 is coming on 1 Sep 25. Here is what's changing + download official HMRC PDF Briefing
HMRC reports:
NCTS6 Phase 1 is primarily a Migration Pathway release that does not impact on customers, ahead of the full NCTS6 Phase 2 deployment (date to be confirmed). It also includes fixes for several known issues in NCTS5:
Unloading Remarks Timestamp Issue: Currently, unloading remarks submitted between 00:00 and 01:00 BST are incorrectly treated as future dated. This will be resolved, eliminating the need for the workaround of using the previous day’s date.
National Transit Write-Off Issue: When the same trader handles both arrival and departure, the CC045 message is incorrectly linked to the arrival identifier. This will be corrected.
Reusable Local Reference Numbers (LRNs): NCTS currently rejects LRNs that have been cancelled and reused. This restriction will be lifted.
Unloading Remarks Rejections for Multiple House Consignments: When adding goods items sequentially within consignments, the system currently expects the sequence to follow the total number of goods items. This will be fixed, and the current workaround will no longer be necessary.
Successful message regeneration: You will now be able to ask the NCTS Helpdesk to re-send a transit message that has already been successfully sent.
Note: Your software provider may have implemented temporary workarounds for some or all of these issues. Please contact them directly to understand how your system will operate after 1 September.rvisingoffice@hmrc.gov.uk or 0300 322 9452.
Download the official HMRC briefing document




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