Fill in your personal details.
Surname: write your last name.
Other names: write your first name and any middle names.
Date of birth: write the date you were born (day, month, year).
Address: write your home address (street, town, postcode).
Email address: write your email if you have one.
Daytime phone number: write your phone number if you have one.
National Insurance No: write your National Insurance number.
Your number will be on tax-related documents like your payslip or P60. Or you can find it online at www.gov.uk/find-national-insurance-number