1. Proffessional:-
NMC
https://ireg.nmc-uk.org/
https://www.nmc.org.uk/registration/joining-the-register/trained-outside-the-eueea/
Disclosure and Barring Service
https://www.gov.uk/government/organisations/disclosure-and-barring-service
2. General:-
https://www.gov.uk/apply-national-insurance-number
Home office for Immigration rules.
https://www.gov.uk/government/organisations/uk-visas-and-immigration