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Export Declarations for Goods Leaving the UK

When goods leave the UK, a CDS export declaration may be needed before they can move through the port, terminal or border. Cartwright CS prepares and submits export declarations for businesses, freight forwarders and logistics providers, helping shipments leave the UK with the right customs paperwork in place.

We are Cartwright Customs Services

Cartwright Customs Services is a UK customs agent based in Southampton, Hampshire. We support exporters with HMRC customs declarations, customs documentation and practical guidance for goods moving from the UK to overseas destinations.


We help make the export process clear, accurate and organised, whether you are exporting commercial goods, specialist equipment, returned items or regular consignments.

What this service covers

Our export declaration service can include:


  • UK CDS export customs clearance declarations

  • Document checks before submission

  • Support with commodity codes and goods descriptions

  • Coordination with freight forwarders, carriers and hauliers

  • Assistance with port or terminal customs requirements

  • Guidance on export evidence and shipment records

  • Support for temporary exports or returned goods where relevant


Where a shipment involves controlled goods, licences or special customs treatment, requirements can vary. We will explain what needs to be checked and what supporting documents may be required.

Who we help

We work with:


  • UK businesses exporting goods to customers overseas

  • Freight forwarders needing customs declaration support

  • Hauliers moving goods through UK ports

  • Manufacturers exporting parts, machinery or equipment

  • Online sellers and wholesalers shipping outside the UK

  • Businesses returning goods to suppliers

  • Private clients exporting vehicles or personal items 


We can support regular exporters and companies making their first international shipment.

Why this service matters

An export declaration provides HMRC with details of goods leaving the UK. It supports customs control, export records and the movement of goods through ports and carriers.


Incorrect or missing export declarations can cause delays, missed sailings, vehicle hold-ups and problems with export evidence. A well-prepared declaration helps the shipment move more smoothly and gives the exporter a clearer customs record.

How Cartwright CS helps

Cartwright CS prepares export declarations based on the commercial documents, route and transport details supplied. We check the information needed for the entry, raise questions early where details are missing and coordinate with the relevant parties so the declaration fits the movement.


Our approach is practical and communication-led. We understand that exports often involve time-sensitive collections, sailing cut-offs and carrier instructions, so we work to keep the process moving.

Common challenges we solve

Exporters often need help with:


  • Goods ready to leave but no export entry arranged

  • Carrier or haulier requests for customs paperwork

  • Unclear goods descriptions or commodity codes

  • First-time export shipments

  • Returned goods being sent back to an overseas supplier

  • Temporary exports for repair, exhibition or testing

  • Confusion over what evidence should be kept after export 


We help you understand what is needed without making the process more complicated than it needs to be.

How the process works

  1. You send us the commercial invoice, packing list, transport details and destination information.

  2. We review the paperwork and check whether any key details are missing.

  3. We prepare the export declaration using the shipment information provided.

  4. The declaration is submitted to HMRC through the relevant system.

  5. We provide the customs reference or documentation needed by the carrier, haulier or freight forwarder.

  6. We stay available for follow-up questions if the port, carrier or haulier needs clarification.


Why choose Cartwright CS

Cartwright CS gives exporters the reassurance of accurate customs handling with clear, responsive communication. We are used to working with businesses, freight forwarders and hauliers where timing matters and paperwork needs to be right first time.


You get a practical UK customs agent who can explain what is needed, submit the export declaration and help coordinate the customs side of the movement.

Location and coverage

Cartwright CS is based in Southampton and supports exporters using ports across the UK, including Southampton, Portsmouth, Felixstowe, Tilbury, London Gateway, Dover, Liverpool, Grangemouth, Immingham and Harwich where relevant.


We provide export customs declaration support for local businesses in Hampshire and for clients moving goods through UK ports nationwide.

Frequently asked questions

When do I need an export declaration?


Most goods leaving the UK require an export declaration. The exact requirements can depend on the goods, destination, value, route and movement type.


Can Cartwright CS submit export declarations for my business?


Yes. We can prepare and submit export declarations using the shipment documents and transport details you provide.


What documents are needed for an export declaration?


We usually need a commercial invoice, packing list, exporter details, consignee details, goods description, values, weights, transport information and the intended route.

Can you help with returned goods being exported?


Yes. We can help with export declarations for goods being returned overseas. The correct process depends on why the goods are being returned and what documentation is available.


Can you work with my freight forwarder or haulier?


Yes. We regularly coordinate with freight forwarders, hauliers, carriers and port contacts to make sure the customs paperwork supports the movement.

Need an export declaration for goods leaving the UK?

Contact Cartwright Customs Services for practical, accurate export customs support.

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