Evidence of your National Insurance number

- Letter from HM Revenue & Customs from the last 12 months

- Letter from the Department of Work & Pensions from the last 12 months

- Payslip from the last 12 months

- National Insurance number plastic card

- P45 or P60 from the last 12 months

- National Insurance contributions account summary from the last 12 months

- Bank statement from the last 12 months showing payments by direct debit for class-2 national insurance contributions, or benefits payments received as long as your national insurance number is shown

- HM Revenue & Customs construction industry registration card (CIS4, CIS5 or CIS6)