> ## Documentation Index > Fetch the complete documentation index at: https://docs.thedatacity.com/llms.txt > Use this file to discover all available pages before exploring further. # What is Trade Data? > Where does the trade data come from? Use data on overseas income, or data on the goods traded, to better understand companies' connections to global markets. There are two ways that we can understand companies' international trade. This is based on two data sources that we have for company exports. 1. Companies House. Companies can choose to declare their **overseas income** - this can be either through exports, or through foreign operations. This details the value of overseas income, but not which goods *or services* have been exported. 2. HMRC. Companies that import and export **have to declare** the goods traded **and when they were traded**. This includes information on imports. **However, detail on the value of goods traded is not provided**. Does not provide information on services that may have been traded. Companies House You can filter companies by the amount of overseas income. image png Feb 24 2025 12 40 25 3197 PM HMRC data We extract data from [UK Trade Info](https://www.uktradeinfo.com/find-uk-traders/) and you can interact with this data in two main ways: **Trade data on company pages** image png Jul 23 2024 02 16 13 1779 PM **Trade data filters** image png Feb 24 2025 12 41 47 2625 PM Connecting our data to UK Trade Info's requires matching their data to a Companies House number.