The realistic UK picture
Around 4.5 million UK office jobs sit in the highest-exposure category — admin, support, junior finance, basic analysis. Of those, 15–25% will be eliminated outright by 2030. The remaining 55–70% will be heavily augmented: same headcount, double the throughput.
This mirrors what happened with email in the 1990s. Office admin headcount didn't fall; it shifted upward in seniority while transactional work disappeared.