NIN Enrolment, Swindon RCCG Overcomers House, Deacon Street off Commercial Road, Swindon. SN1 5NA 4 Reasons why you need a NIN in the DiasporaIt is mandatory for All Nigerians, for identification.It will soon be needed for opening Nigerian Bank Accounts, etc.It is now Mandatory for renewal of Nigerian International Passport.Nigerian Telecom Companies have been asked by the Regulators to disconnect SIM Cards of customers who do not have a NIN.