Christmas Special - AI:82

Doctor Who: The Husbands of River Song had an Audience Appreciation or AI score of 82.

The Appreciation Index or AI is a measure of how much the audience enjoyed the programme. The score, out of a hundred, is compiled by a specially selected panel of around 5,000 people who go online and rate and comment on programmes.

The BBC's highest score of the evening went to Call the Midwife on BBC One which scored 88.

On BBC Three, the Boxing Day repeat of Doctor Who was watched by 0.26 million viewers.