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That is an episode of a never ending saga titled "UK national id" 😂 Around 15 years ago there was a debate to create a single country-wide identification document, as almost every country in Europe now has.
But it was widely protested and blocked because "I'm not a number, I'm a free man".
As result there's no single citizen identification database, number etc in the UK. Numbers like NINo, driver license etc are limited in scope to the agencies who use them.