This year’s Christmas Special, The Return of Doctor Mysterio, had an Appreciation Index (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 Magician’s Apprentice, Under the Lake, The Zygon Inversion & Face The Raven – 84
The Witch’s Familiar & Before the Flood – 83
The Girl Who Died, The Zygon Invasion, Hell Bent, The Husbands of River Song & The Return of Doctor Mysterio – 82
The Woman Who Lived – 81
Heaven Sent – 80
Sleep No More – 78