You’ll need to supply information such as:

- National Insurance (NI) number
- Name
- Date of birth
- Postal address
- Telephone number
- Email address
- Name of business
- What type of work you do
- Start date

If you don’t have an NI number, you can apply for one from Jobcentre Plus on 0845 600 0643, or textphone 0845 600 0643

If you have an NI Number but you can’t find it, you’ll need to go online and fill in form CA5403 https://www.gov.uk/government/publications/national-insurance-get-your-national-insurance-number-in-writing-ca5403

Alternatively, call 0300 200 3502 or text phone 0300 200 3519.