When a UK firm trades across borders — whether derivatives, securities, or structured products — both sides of the transaction need to be identifiable through a universal system. That’s what the GLEIF-coordinated identifier does. It’s not a licence or an approval; it’s simply a standardised way to say “this is who we are” in a format every regulator recognises. TNV LEI issues and renews these for UK entities, typically using Companies House data to verify the application.