---
title: Royal Mail Importers - Freight to Post Requirements
description: "Sender’s Address Based in another country, outside of the UK Return Address Set to default on our system to Royal Mail Heathrow Distribution Centre: Requirements International shipments requirements"
---
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# Royal Mail Importers - Freight to Post Requirements
Shipment arrives in the UK as Freight but Royal Mail collect these items from the airline handler before converting them from Freight into Post for the purpose of customs clearance. Once converted / recognised as Postal, Royal Mail presents items to customs as postal items before injecting them into the UK network.
To develop everything correctly, make sure to adhere to the following requirements:
| **Sender’s Address** | Based in another country, outside of the UK |
| --- | --- |
| **Return Address** | Set to default on our system to Royal Mail Heathrow Distribution Centre: CompanyName: COMPANY NAME - Royal Mail HWDC Line1: Axis Park, Hurricane Way Town: SLOUGH Postcode: SL95 1FP |
| **API Requirements** | [International shipments API requirements](https://kb.intersoft.co.uk/knowledge/royal-mail-api-call-requirements-for-international-shipments?hsLang=en) |
| **Customs Documentation** | Required - either combined label + CN22 or CN23 separately. Please see [here](https://kb.intersoft.co.uk/why-is-a-cn23-produced-and-not-a-cn22?hsLang=en) for more information on this. |
| **Manifest – Royal Mail Sales Order Summary** | Printing not required, as there is no one to hand the paperwork over to and the customers provide the pre-alert data to HWDC which acts as a replacement of the manifest paperwork |
| **Royal Mail Sign Off** | Required – CDS checks and physical labels. For CDS checks, you will be requested to create couple of labels, manifest them and share with us the PDFs so they can be reviewed and signed off. For physical label sign off, you will be requested to create couple of labels, manifest them and ship them to Royal Mail. |
**Important:**
Please also remember to develop our [Containerisation (A-scan) API](https://kb.intersoft.co.uk/intelligent-shipper-containerisation-api?hsLang=en). It's one of APIs mandatory for Freight 2 Post customers.
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