The BBC is to cut a 1,000 jobs because of a £150m budget gap in its licence fee income.
An unexpected increase in the number of households saying they do not watch live TV so do not pay for a licence has been blamed for the shortfall.
Many cuts are to come from professional and support areas, while management structures will be streamlined.
BBC director general Tony Hall says this will save around £50m so more cuts will come.
Mr Hall said the BBC was facing "difficult choices" because of the tough financial climate.
He said the fact that more than one million fewer people had a television set than was predicted in 2011, when another round of efficiency savings were implemented, so extra savings had to be found.
He added decision-making had become too complicated in recent times, as new services have been introduced, and that he wanted to cut these back to make things simpler, which "inevitably would lead to fewer decision-makers".
