READ MORE: How much Strictly dancers get paid - Huge pro dancer, judge and celebrity salaries revealed An increase in streaming services including Amazon Prime and Netflix have also contributed to the decline in viewers.
The BBC winter line-up includes A Very British Scandal which stars The Crown star Claire Foy, The Tourist which will star The Fall actor Jamie Dornan and The Responder which will star Sherlock's Martin Freeman.
BBC drama boss Piers Wenger said on Monday: "These dramas don't sit comfortably within those genres we feel very familiar with. "Distinctive British content is at the very heart of what we do.
What we feel excited about is pushing against the conventions of genre. They may be the way the streaming platforms organise.
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