Exclusive: Some Australian-British citizens are so upset by the United Kingdom's new entry requirements that they are forking out thousands to officially renounce their citizenship.

Nine.com.au reported on major changes coming for travellers visiting the UK from February this year, which will see British border security enforce the new Electronic Travel Authorisation (ETA) scheme.

Australians with British or Irish citizenship won't need to apply for a $20 ETA due to their right of abode, but they would have to prove their nationality if travelling with an expired UK passport – a small but important detail that has triggered widespread outrage.

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