The couple joined primary school pupils for free workshops, watching an astronomy lesson and taking part in team challenges and a creative design activity about living in space. Photographs show the pair in coordinating blue blazers, smiling as they sat among the children.
Earlier the pair shared a casual family photo captioned "Celebrating 15 years of marriage ❤️", showing William, 43, Kate, 44, and their children Prince George, 12, Princess Charlotte, 10, and Prince Louis, 8. The day before, William visited an RAF base in Wales; the couple once lived in a rented home in Anglesey from 2010 to 2013. They first met at the University of St. Andrews, became engaged in 2010 and married at Westminster Abbey on April 29, 2011.