King Charles III follows his mother's coffin — The King, the Princess Royal, the Duke of York, the Earl of Wessex, the Prince of Wales, the Duke of Sussex, Peter Phillips, the Earl of Snowdon and the Duke of Gloucester walk behind Queen Elizabeth II's coffin. Sir Timothy Laurence was also in the procession but is not visible.
Photo Credit: By Department for Digital, Culture, Media and Sport - https://www.flickr.com/photos/49429730@N08/52371504734/, CC0, https://commons.wikimedia.org/w/index.php?curid=123188652