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Back at the BBC, HR boss Valerie Hughes D'Aeth is pleased to have delivered 30% savings in her department, exceeding a 20% target.

It's the sort of figure any HR professional would expect to have at their fingertips. However, it seems she doesn't have some other stats ready to hand. An FOI request for churn figures in her department over the past three years has been rejected because it would take someone more than two and a half days to work out....