FOI reference: FOI-2025-3154

You asked

Please provide the following information for the last three financial years (or the most recent period available):

A list of all suppliers with whom your organisation has contracted for:

  1. Address verification products
  2. Data quality services (e.g., cleansing, enrichment, validation)
  3. Identity and age verification services

The total amount spent with each supplier for these services, broken down by financial year.

A brief description of the services or products provided by each supplier (e.g., address validation, data cleansing, ID verification, age checks, etc.).

The contract start and end dates for each supplier.

We said

Thank you for your request.

Please note we have interpreted your request as contracts with suppliers for which the main purpose is to provide address verification products, data quality services or identity and age verification services. Many of our data/survey-related contracts also have an element of cleansing and validation before the data is submitted to ONS. 

Please see the associated download containing the information requested.