Kate praises peer-to-peer support
During the video call, Kate said: "A huge well done to all of you, I know there's a big team of you out there in communities across the country.
"Both William and I hear about how vital these relationships are to families – they're a real lifeline.
"So to you and your army of volunteers out there, a huge well done.
"I, like you, would love to see peer-to-peer support more embedded and celebrated in communities and society as a whole."
Sarah McMullan, of the NCT, who was on the call, said: "It was brilliant for the Duchess to put the spotlight on mental health issues and how peer support can make a difference."