Transparency data

Open Contracting

This page contains open contracting data from the Crown Commercial Service.

Documents

Guidance to the dashboards

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CCS Contracts Finder Open Contracting Data Standard publication guide

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UK Open Contracting National Action Plan updates

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Input-Output Field Mapping Contracts Finder OCDS

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Details

The UK is the first G7 country to commit to the Open Contracting Data Standard (OCDS) for contracts administered by a central purchasing authority, the Crown Commercial Service (CCS). This means that the whole process of awarding public sector contracts will be visible to the public for the first time.

Open contracting means all data and documents are disclosed at all stages of the contracting process. This supports organisations to increase contracting transparency, and allows deeper analysis of contracting data by a wide range of users.

You can read a digest of our progress to date.

We publish:

  • a daily snapshot of the Contracts Finder dataset in OCDS format: find out more about the Contracts Finder implementation of the Open Contracting Data Standard in the guides above
  • a public interface allowing search of the Contracts Finder database and download in the Open Contracting Data Standard format

In addition, a CCS contract dashboard and open contract statistics are available. You can find out more about these in the guides above.

The current OCDS interface is an Application Programming Interface (API) comprised of the following end-points that can be called using simple GET and POST requests using the site url which is https://www.contractsfinder.service.gov.uk

OCDS Search API here

  • API: https://www.contractsfinder.service.gov.uk/Published/Notices/OCDS/Search
  • Help

OCDS Record API

  • API: https://www.contractsfinder.service.gov.uk/Published/Notice/records/{{OCID}}.json
  • Help

OCDS Release API

  • API: https://www.contractsfinder.service.gov.uk/Published/Notice/releases/{{NoticeId}}.json
  • Help

OCDS Daily API

  • API: https://www.contractsfinder.service.gov.uk/harvester/Notices/Data/CSV/{year}/{month}/{day}
  • Help

We have published a mapping document that shows how each field in each notice type stored in the internal Contracts Finder data model maps to the corresponding field of the OCDS data structure. It indicates currently available data, and fields to be output in future iterations of our work. Our OCDS output is validated against v1.0 of the OCDS standard. We are aware we have five values that are not supported in v1.1 of the OCDS standard and we are planning a further evaluation with the OCDS helpdesk.

Contracts Finder OCDS outputs a unique identifier for each registered buyer organisation on Contracts Finder. A published register of buyer IDs is available for download. Unique identifiers are output by the registration service. The identifiers may resemble website addresses, but they are not. Buying organisations can post to Contracts Finder without registering directly through a number of e-procurement systems. In these cases, the ID of the e-procurement system is output, rather than an identifier for each individual buying organisation on that system.

Users can be assured that they will receive the most up to date list at the time of download. Each organisation will be flagged as “Registered” or “De-registered” depending on whether they are still active on the system.

Additionally, GOV.UK Registers is curating approved registers to provide accurate and consistent data for use across government. Where we have found a match for a Contracts Finder Buyer in these registers, we are using the data to provide a unique identity for them in Contracts Finder. These registers are the Government Organisation Register and the Local Authority Register.

Published 1 December 2016
Last updated 20 March 2018 + show all updates
  1. Text amends made and new document updated
  2. Updated links
  3. New text / document added
  4. Text added
  5. Updated open contracting data standard release API URL
  6. First published.