Simon (pictured) was Group Editor of Archant Life's county magazine titles in the South East before he started his new role on October 17.
He has a long association with Kent as a former editor of the Kent Messenger and director of the KM Group.
He said: "This is a challenging and exciting time for all media businesses. I am really looking forward to meeting our readers and customers.
"I have an excellent team here and I feel that we are ideally placed to offer the most compelling and useful all-Kent content to our readers and the best and most cost effective service to our advertisers."
Archant Lifestyle Regional managing director, Tim Thurston, said: "Simon's brief is to grow both Kent on Sunday and Kent Life to even greater heights.
"We feel that the combination of the county's two premier brands will be a powerful tool for our existing and new customers," said Simon.
Archant KOS Media also produces free weekly printed newspapers Kent on Saturday, Your Tunbridge Wells, Your Medway and Your Swale. Also digital only newspapers Your Ashford, Your Canterbury, Your Deal, Your Dover, Your Maidstone, Your Sandwich, Your Shepway and Your Thanet.
