reason for getting national insurance number in uk
National Insurance number Persons from abroad who wish to work in the UK, or those to whom a number was not initially allocated as children, must apply for a number through the Department for Work and Pensions (DWP).[6] The prefixes used are typically different from those used in the normal run.[6][not in citation given]
Personal Public Service Number The PPSN was known as the Revenue and Social Insurance Number (RSI No) until 1998. RSI Numbers were first issued in April 1979 as a replacement for the separate PAYE Number and Social Welfare Insurance Number which had been used for income tax and social welfare purposes respectively until then. The PAYE Number was issued by the Revenue Commissioners and these numbers were transferred to the RSI No system as a basis for the unified system.