--- title: Using Companies House API Integration in C-Link description: This guide provides step-by-step instructions on how to use the Companies House API integration in C-Link. --- [Skip to content](https://knowledge.c-link.com/en/guides/using-companies-house-api-integration-in-c-link#main-content) English Show submenu for translations ![logo.svg\]](https://knowledge.c-link.com/hubfs/Imported%20sitepage%20images/logo.svg) Open main navigation Close main navigation - English Show submenu for translations - [Log a support ticket](mailto:support@c-link.com) [Log a support ticket](mailto:support@c-link.com) Welcome to the C-Link Knowledge Base - There are no suggestions because the search field is empty. 1. [C-Link Help Centre](https://knowledge.c-link.com/en/guides?hsLang=en) 2. [Integrations](https://knowledge.c-link.com/en/guides/integrations?hsLang=en) 3. [Companies House API](https://knowledge.c-link.com/en/guides/integrations?hsLang=en#companies-house-api) # Using Companies House API Integration in C-Link ## This guide provides step-by-step instructions on how to use the Companies House API integration in C-Link. **Estimated Read Time: 2 Minutes ⏱** It is recommended to familiarise yourself with the Supply Chain section before proceeding with this guide. --- #### **Sections in this Article:** - 🖥️ [Understanding Companies House API Integration](https://knowledge.c-link.com/en/guides/using-companies-house-api-integration-in-c-link#Understanding_Companies_House) - 🔍 [Searching for a Company](https://knowledge.c-link.com/en/guides/using-companies-house-api-integration-in-c-link#Searching_Company) - 📄 [Adding Company Detail](https://knowledge.c-link.com/en/guides/using-companies-house-api-integration-in-c-link#Adding_Company)s - 🎥 [Full Walkthrough Video](https://knowledge.c-link.com/en/guides/using-companies-house-api-integration-in-c-link#Full_Walkthrough_Video) --- ### **🖥️ Understanding Companies House API Integration** The Companies House API integration ensures that the data you use is live and up-to-date. This is crucial for placing contracts with registered company numbers and addresses. ### **🔍 Searching for a Company** To search for a company using the Companies House API: 1. **Navigate to Supply Chain**: - Go to your project dashboard and click on "Supply Chain". 2. **Add Subcontractor**: - Click "Add Subcontractor". 3. **Search for Company**: - Use the search tool to find a company. For example, search for "Dry Lining Direct Limited". 4. **Automatic Retrieval**: - The tool will automatically find and populate the company's registration number and registered address. 5. **Examples**: - Search for other companies like "Tesco" or "Sainsbury's" to see the integration in action. The system will retrieve and display their registration numbers and addresses. ### **📄 Adding Company Details** To complete the process: 1. **Fill in Additional Details**: - After the company details are populated, add the contact information and any other required details. 2. **Pre-Qualification**: - The pre-qualification process will commence automatically using the retrieved data. ### **Summary ✅** This guide has outlined the process for using the Companies House API integration in C-Link. Following these steps ensures your contracts are accurate and up-to-date with registered company information. ### **🎥 Full Walkthrough Video** For a comprehensive guide, watch the full walkthrough video below: - [Getting Started with C-Link](https://knowledge.c-link.com/en/guides/getting-started-with-c-link?hsLang=en#main-content) - [Account Set-up](https://knowledge.c-link.com/en/guides/getting-started-with-c-link?hsLang=en#account-set-up) - [Your Dashboards and how to add a new project](https://knowledge.c-link.com/en/guides/getting-started-with-c-link?hsLang=en#your-dashboards-and-how-to-add-a-new-project) - [Supply Chain](https://knowledge.c-link.com/en/guides/getting-started-with-c-link?hsLang=en#supply-chain) - [Company Assets](https://knowledge.c-link.com/en/guides/getting-started-with-c-link?hsLang=en#company-assets) - [Creating your First C-Link Project](https://knowledge.c-link.com/en/guides/getting-started-with-c-link?hsLang=en#creating-your-first-c-link-project) - [Trade and Package management](https://knowledge.c-link.com/en/guides/getting-started-with-c-link?hsLang=en#trade-and-package-management) - [Tendering and Tender Management](https://knowledge.c-link.com/en/guides/getting-started-with-c-link?hsLang=en#tendering-and-tender-management) - [Quote Analysis and Orders Management](https://knowledge.c-link.com/en/guides/getting-started-with-c-link?hsLang=en#quote-analysis-and-orders-management) - [C-Link Best Practices](https://knowledge.c-link.com/en/guides/getting-started-with-c-link?hsLang=en#c-link-best-practices) - [Digital Price Breakdown](https://knowledge.c-link.com/en/guides/getting-started-with-c-link?hsLang=en#digital-price-breakdown) - [Cost Planning Tool](https://knowledge.c-link.com/en/guides/getting-started-with-c-link?hsLang=en#cost-planning-tool) - [Post Contract Financial Management](https://knowledge.c-link.com/en/guides/getting-started-with-c-link?hsLang=en#post-contract-financial-management) - [Configuring C-Link](https://knowledge.c-link.com/en/guides/configuring-c-link?hsLang=en#main-content) - [Supply Chain Bulk Integration](https://knowledge.c-link.com/en/guides/configuring-c-link?hsLang=en#supply-chain-bulk-integration) - [Custom Trade Request](https://knowledge.c-link.com/en/guides/configuring-c-link?hsLang=en#custom-trade-request) - [Custom Document Template Request](https://knowledge.c-link.com/en/guides/configuring-c-link?hsLang=en#custom-document-template-request) - [Other Templates](https://knowledge.c-link.com/en/guides/configuring-c-link?hsLang=en#other-templates) - [Order Approval Workflow](https://knowledge.c-link.com/en/guides/configuring-c-link?hsLang=en#order-approval-workflow) - [Procurement Schedule Overview](https://knowledge.c-link.com/en/guides/configuring-c-link?hsLang=en#procurement-schedule-overview) - [Integrations](https://knowledge.c-link.com/en/guides/integrations?hsLang=en#main-content) - [DocuSign & E-Signatures](https://knowledge.c-link.com/en/guides/integrations?hsLang=en#docusign-e-signatures) - [Companies House API](https://knowledge.c-link.com/en/guides/integrations?hsLang=en#companies-house-api) - [Prosper](https://knowledge.c-link.com/en/guides/prosper?hsLang=en#main-content) - [How does Prosper work?](https://knowledge.c-link.com/en/guides/prosper?hsLang=en#how-does-prosper-work) - [Prosper Marketplace](https://knowledge.c-link.com/en/guides/prosper?hsLang=en#prosper-marketplace) - [Subcontractor Pre-Qualification](https://knowledge.c-link.com/en/guides/prosper?hsLang=en#subcontractor-pre-qualification) - [Product Releases](https://knowledge.c-link.com/en/guides/product-releases?hsLang=en) - [Reporting with C-Link](https://knowledge.c-link.com/en/guides/reporting-with-c-link?hsLang=en#main-content) - [Activity Reports](https://knowledge.c-link.com/en/guides/reporting-with-c-link?hsLang=en#activity-reports) [![Chill listening crop-3](https://knowledge.c-link.com/hubfs/Imported%20sitepage%20images/logo.svg "Chill listening crop-3")](https://c-link.com/) C-Link Help Centre Copyright © 2026, Construction Link Limited ```json { "@context" : "https://schema.org", "@type" : "VideoObject", "caption" : { "@type" : "MediaObject", "contentUrl" : "https://knowledge.c-link.com/media-transcripts/173775033614/en.vtt", "inLanguage" : "en", "name" : "en Captions" }, "contentUrl" : "https://8503555.fs1.hubspotusercontent-na1.net/hubfs/8503555/3.%20b%20Companies%20House%20Integration.mp4", "dateModified" : "2025-09-17T11:38:40.914Z", "duration" : "PT1M21.472S", "height" : 2160, "name" : "3. b Companies House Integration", "thumbnailUrl" : "https://8503555.fs1.hubspotusercontent-na1.net/hubfs/8503555/3.%20b%20Companies%20House%20Integration.mp4/medium.jpg", "uploadDate" : "2024-07-23T20:47:12.301Z", "width" : 3840 } ```