Kate previously visited the charity’s Hornsey Road Children’s Centre in November 2017, when she was pregnant with her third child Prince Louis.
At the time the mother-of-three shared her own intimate struggles with parenthood, admitting that her husband Prince William did not take to fatherhood straight away with their first child Prince George.
Meanwhile the Duke of Cambridge is away on an engagement of his own in Davos, Switzerland, where he will be interviewing Sir David Attenborough later today about the dangers the planet faces with climate change as part of the World Economic Forum.
Kensington Palace said the duke would talk to Sir David about his decades of work highlighting the importance of the natural world. Read more from EXPRESS.