The National Insurance number application digital service for adults who have not been allocated a number is now open HMRC have confirmed.
DWP have also opened their face-to-face service for those who may still need to attend an office to have their identity verified. Applications should be made online initially, and applicants will be advised if they need to book a face-to-face appointment.
Demand is currently high for the service and applications can take up to 16 weeks to be processed.
If an employee already has a National Insurance number, the quickest way to confirm or share their number is by using their personal tax account to download a confirmation letter or follow the lost National Insurance number guidance here