National Westminster Bank Customer Services. If you need our help, choose the option that's best for you: - For quick banking questions, send us a. Your browser appears to have been set up to reject cookies.
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How to use the NatWest app. National Westminster Bank, once Britain's most profitable bank, was delisted from the London Stock Exchange and became, with its subsidiaries Corporate Markets, a leading banking partner to UK commercial customers and major corporations and governmental institutions around the world. National Westminster Bank Plc SWIFT Codes are used when transferring money between banks, particularly for international wire transfers, and also for the exchange of other messages between banks.