In September 2011, Smith offered her support for raising the NZ$4.6million needed to help rebuild the Court Theatre in Christchurch, New Zealand, after the earthquake in 2011 that caused severe damage to the area. In July 2012, she became a patron of the International Glaucoma Association, hoping to support the organisation and raise the profile of glaucoma. She is also a patron of the Oxford Playhouse, where she first began her illustrious career. Smith is a vice-president of the Chichester Cinema at New Park and a vice-president of the Royal Theatrical Fund which provides support for members of the entertainment profession that are unable to work due to illness, injury or infirmity.