When King Charles and Queen Camilla announced their engagement in February 2005, they said almost straight away that they would marry in April that year in a civil ceremony at Windsor Castle. Until the mid-1990s, civil marriages in England and Wales could only be held in register offices. Windsor Castle wasn’t licenced and almost as soon as applications began to allow this royal wedding to take place within its ancient walls, a rather large problem arose. But not Windsor Castle. However, it’s unlikely to change the status of Windsor Castle as a marriage venue.