The Scottish broadcaster, who hails from Glasgow, said she was “delighted” to be one of seven new celebrants joining the Humanist Society Scotland.
The former Changing Rooms presenter conducted her first Humanist funeral yesterday after passing the first part of her training recently.
She is not authorised to deliver legal Humanist weddings, although most celebrants do progress to that stage after gaining more experience.
The Wheel of Fortune star, who will conduct ceremonies under her married name of Carol Knight, said: “I am delighted to be part of the Humanist Society Scotland celebrant team.
“I have already found the experience of delivering the first funeral a real privilege in supporting the family involved.
“For me, Humanist values of care, compassion and kindness are really important in delivering a meaningful ceremony to families at some of the hardest times in their lives.”
The TV star joins a network of more than 125 Humanist celebrants working across Scotland with the society.
Lynsey Kidd, director of services at Humanist Society Scotland, said: “We are delighted to support seven of our members to become celebrants delivering funerals and naming ceremonies; they join the biggest and most trusted network of Humanist celebrants in Scotland.
“All Humanist Society registered celebrants work to high standards and are trained, mentored and regularly reviewed to ensure that they can provide a personal, fitting and meaningful ceremony for people’s loved ones.”