Sandbox Environment

UK customs declarations,
one platform

Import, export, and transit declarations submitted directly to HMRC CDS and NCTS. Built for UK customs brokers by OTS Broker.

Imports
CDS H1 declarations
HMRC CDS
Exports
CDS B1 declarations
HMRC CDS
Transit
NCTS Phase 5 T1/T1*
HMRC NCTS

What NEXT provides

A customs declaration platform connected to HMRC sandbox APIs with real validation and submission.

Direct CDS Submission

Submit import and export declarations directly to HMRC CDS API. Receive real conversation IDs, LRNs, and notification responses.

NCTS Phase 5 Transit

Full CC015C transit declaration generation with guarantee management, route planning, and submission to HMRC NCTS.

Real-time Notifications

CDS webhook processing shows declaration status: received, accepted, cleared, rejected, or queried.

Virtual Clerk Guidance

Field-level operator hints for commodity codes, procedure codes, valuation, and customs-specific data elements.

Declaration Lifecycle

Track each declaration from draft through submission to clearance, with query/document workflow visibility.

Operator Validation

Pre-submit validation checks against CDS and NCTS rules with specific error messages and correction guidance.

Operator workflow

The same flow for imports, exports, and transit.

Create

Open a new declaration. Enter header fields, parties, and transport. Add line items with commodity codes and values.

Validate

Run pre-submit checks. Virtual Clerk highlights common issues. Fix validation errors before proceeding.

Submit

Send to HMRC via CDS or NCTS API. Receive LRN and conversation ID. Track submission status in real time.

Track

Monitor lifecycle: received, accepted, cleared, or queried. Respond to customs queries and upload documents.

Current status

NEXT is in active development for internal operations and controlled broker demos.

HMRC CDS sandbox
live
HMRC NCTS sandbox
live
Import declarations
Operational
Export declarations
Operational
Transit declarations
Operational
Virtual Clerk guidance
Active
Pre-submit checks
Active
Declaration lifecycle
Active
Environment
live
Production HMRC
Not yet

Get in touch

NEXT is currently available for internal OTS operations and controlled broker demonstrations.

support@otsbroker.comOperator Sign In