Cheek kissing

Cheek kissing was a friendly gesture. Charles Dickens described it as "modern" in 19th century culture when Rose Tyler kissed him on the cheek. (TV: The Unquiet Dead) It was viewed as unusual in the 21st century. The Eleventh Doctor used it when meeting Craig Owens and Sophie. (TV: The Lodger)

Nyssa kissed the Fifth Doctor on the cheek when she chose to remain on Terminus, (TV: Terminus) with the Eighth Doctor later returning the favour. (AUDIO: A Heart on Both Sides)