In a private ceremony, with their 10-year-old son Freddie in attendance, the couple recommitted themselves to each other.
Discussing the renewal, Natalie said: “How James didn’t know is beyond me, It was so magical and so intimate with it just being the three of us.
“It was absolutely perfect and all I dreamt it would be,” she told Hello! Magazine, with the ceremony taking place just days before their wedding anniversary.
Since marrying in 2008, the couple went on to have their son Freddie, who was born four years after they originally tied the knot.
Speaking about meeting their son for the first time, Natalie explained: “I cried and James had a tear in his eye. It was incredible to see the tiny hands and feet, the face and this little thing dancing away.”