How do I get a national insurance number?
If you are looking for work, starting work or setting up as a self-employed person, you will need a national insurance number. If you have the right to work in the UK, you will need to telephone Jobcentre Plus on 0345 600 0643 to arrange to get one. Lines are open 8.00 am to 6.00 pm Monday to Friday and are normally less busy before 9.00 am. They may require you to attend an 'Evidence of identity' interview.
There is some useful information on how to apply for a national insurance number on the Gov.UK website (link opens in a new window)
Once your application is successful, you will receive a letter confirming your NI number. Take good care of this as it is your reminder of your NI number and you will need to use it when you contact HM Revenue and Customs (HMRC) or the Department for Work and Pensions (DWP). As soon as you have your NI number, you should tell your employer.