updated 11/07/2013 AT 11:00 AM ET
•originally published 11/07/2013 AT 12:15 PM ET
They took a specially chartered red London bus a short quarter mile from their palace home to the High Street Kensington station.
There, they met and chatted with charity workers who were selling the traditional red poppy emblems Britons wear to commemorate casualties of war.
William and Kate, both 31, were helping to promote a Royal British Legion bid to raise 1.6 million (or $2.5 million) for the charity in a single day in the capital.
The couple, who had left aides watching their 3-½-month-old son, Prince George, sleeping at home in Kensington Palace, had earlier greeted Royal British Legion staff, helpers and supporters outside their apartment at the palace.
Comedy actress and charity supporter Barbara Windsor asked the couple about baby George, to which Kate, who had pinned overlapping poppies on her red L.K. Bennett coat, replied, “He’s half asleep.”
“He’s behaving himself this morning,” William added.
On the bus ride to the station, the Duke of Cambridge told volunteers he and his wife were happy to have now settled into their 21-room apartment at Kensington Palace. “It’s quite nice being in one place,” he said.