Skip to main content

UK Specific Rules

To clarify UK specific processes and track temporary measures it was suggested by a software developer that we record changes in the same format as transit specification Rules and Conditions. We have adopted this approach, and will add, edit, or remove these rules as required moving forward, with confirmation of changes spotlit in Tech Clinics and the changelog.

The rules will be listed separately for GB (Great Britain) and XI (Northern Ireland) to ensure clarity where there are differences due to policy, system, or geographical reasons.

If you have questions or concerns about these rules, or suggestions for improvement, please let us know via raising tickets (SDST), at tech clinic, or by contacting our team: transit.customspolicy@hmrc.gov.uk

GB001

Transit movements involving goods which are being exported from GB or XI must be associated with an Export Declaration MRN made to CDS - Customs Declaration Service.

This Export Declaration MRN should be referenced in the Transit Declaration at the most appropriate declaration level: Consignment, House Consignment, or Consignment Item, in either the ‘Previous Document’ or ‘Supporting Document’ data groups.

If using the Previous Document data group, the Type data element derived from CL214 (Previous Document Type) should be NMRN - Declaration/Notification MRN, or an established alternative which does not confuse the nature of the previous document in countries of destination.

If using the Supporting Document data group, the Type data element derived from CL213 (Supporting Document Type) should be NZZZ - Document equivalent to ‘ZZZ’ defined in Commission Delegated Regulation (EU) 2016/341 (Appendix D2: Additional codes for the computerised transit system).

Use of these codes is part of a workaround to bypass the actual export declaration MRN reference N830 (Goods declaration for exportation) which, due to overlap with specific AES (Automated Export System) functionality, cannot currently be used for goods exported from the UK moving via transit without restricting the Office of Destination able to be declared to only those which double as an EU Office of Exit (a customs office at the border of the EU which handles EU Export Declarations).

If your intended Office of Destination for the transit procedure, is, an office of exit - Previous Document reference N830 may be used without issue at the House Consignment level of the declaration.

When AES functionality is established in XI - N830 may be used for transit movements containing EU export goods departing from an XI (Northern Ireland) Office of Departure and will be necessary to ensure proper interaction between NCTS and AES on outbound EU export goods.

GB002

From TPendDate for NCTS phase 6: 01/09/2025, Transit Declaration IE015 Security-Type cannot include ENS data.

Data group - Transit Operation, data element – Security, values from CL217 (Declaration Type Security) should be restricted to only values 0 (not used for safety and security purposes) and 2 (EXS - Exit Summary Declaration data). Values 1 (ENS - Entry Summary Declaration data) and 3 (Combined EXS & ENS) include ENS data and are no longer allowable as they may confound the correct processes for NCTS 6 opt-in countries receiving declarations containing these values.

This is a temporary measure - the options will be removed from the codelist (or a new codelist used instead) as we approach NCTS 6 operations in the future. There will be a rule validation in place shortly after 01/09/2025 to reject IE015s which do not consider the above and are submitted with Security Type 1 or 3, more information will follow.

XI001

Transit movements involving goods which are being exported from GB or XI must be associated with an Export Declaration MRN made to CDS - Customs Declaration Service.

This Export Declaration MRN should be referenced in the Transit Declaration at the most appropriate declaration level: Consignment, House Consignment, or Consignment Item, in either the ‘Previous Document’ or ‘Supporting Document’ data groups.

If using the Previous Document data group, the Type data element derived from CL214 (Previous Document Type) should be NMRN - Declaration/Notification MRN, or an established alternative which does not confuse the nature of the previous document in countries of destination.

If using the Supporting Document data group, the Type data element derived from CL213 (Supporting Document Type) should be NZZZ - Document equivalent to ‘ZZZ’ defined in Commission Delegated Regulation (EU) 2016/341 (Appendix D2: Additional codes for the computerised transit system).

Use of these codes is part of a workaround to bypass the actual export declaration MRN reference N830 (Goods declaration for exportation) which, due to overlap with specific AES (Automated Export System) functionality, cannot currently be used for goods exported from the UK moving via transit without restricting the Office of Destination able to be declared to only those which double as an EU Office of Exit (a customs office at the border of the EU which handles EU Export Declarations).

If your intended Office of Destination for the transit procedure, is, an office of exit - Previous Document reference N830 may be used without issue at the House Consignment level of the declaration.

When AES functionality is established in XI - N830 may be used for transit movements containing EU export goods departing from an XI (Northern Ireland) Office of Departure and will be necessary to ensure proper interaction between NCTS and AES on outbound EU export goods.

XI002

From TPendDate for NCTS phase 6: 01/09/2025, Transit Declaration IE015 Security-Type cannot include ENS data.

Data group - Transit Operation, data element – Security, values from CL217 (Declaration Type Security) should be restricted to only values 0 (not used for safety and security purposes) and 2 (EXS - Exit Summary Declaration data).

Values 1 (ENS - Entry Summary Declaration data) and 3 (Combined EXS & ENS) include ENS data and are no longer allowable as they may confound the correct processes for NCTS 6 opt-in countries receiving declarations containing these values.

This is a temporary measure - the options will be removed from the codelist (or a new codelist used instead) as we approach NCTS 6 operations in the future. There will be a rule validation in place shortly after 01/09/2025 to reject IE015s which do not consider the above and are submitted with Security Type 1 or 3, more information will follow.