UK Company Registration Number (CRN) generator

Last modified: April 3, 2025

The UK Company Registration Number (CRN) generator creates unique identification numbers assigned to companies registered in the United Kingdom. These numbers, usually 8 characters long (a mix of digits and sometimes letters), are used by Companies House to uniquely identify and track businesses in the UK.

Note

If you select United Kingdom from the Country-specific data list on the Options page of the Data Generator Project Properties wizard, the UK Company Registration Number (CRN) generator will be applied to columns that meet the matching rules, replacing the default (United States) generator.

Generator properties

The table provides key details about the generator, including the short name, sample of the generated data, the supported data types, and whether it is specific to a particular country.

Short name	Example of generated data	Data type matching	Country-specific
UK CRN	SC406743, 08793152, OC320935, 02557363, …	character varyingcharactertext	UK

Matching rules

The generator can be assigned to a column that matches any of the following rules:

The column name is ‘CRN’, regardless of the table name.
The column name starts with ‘registr’ and ends with ‘Number’, with any or no characters in between, regardless of the table name.
The column name contains ‘compan’, preceded or followed by any or no characters, and ends with ‘Number’, regardless of the table name.

Configure additional options

The generator produces data based on a regular expression. Since it is built on the RegExp generator, see Regular Expression generator to customize settings and understand the correct usage of syntax.