National Australia Bank (NAB) has confirmed its contingency planning for its subsidiary Clydesdale Bank includes seeking registration as an English company in the event of a 'Yes' vote in the forthcoming Scottish independence referendum.

Re-registration would address some of the uncertainties and risks surrounding terms of separation if Scotland were to become an independent country.

NAB Group CEO Andrew Thorburn said that in the event of an affirmative vote registration of Clydesdale Bank in England would provide greater clarity going forward.

"This contingency plan gives our Clydesdale and Yorkshire Bank customers increased certainty about the ongoing success and stability of the bank," Mr Thorburn said.

Re-registration in England would be subject to a number of regulatory approvals and other requirements, the timing and cost of which would be determined in due course.

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