Dwindling numbers of teams meant that Kent 3 folded at the end of the 2007–08 season, with all sides automatically promoted to what was then Kent 2.
However, following a 15 year hiatus, and after the RFU's Adult Competition Review in 2022 - and the decision by Kent Rugby to allow reserve teams to participate in county leagues - from season 2023-24 it was resurrected and adopted its current name Counties 5 Kent.
Departing were Canterbury III, Bromley II and Old Colfeians II, all promoted to Counties 4 Kent.
Joining were Footscray and Lordswood, relegated from Counties 4 Kent.
New entries to the league were Beckenham III, Park House II, Old Alleynians III and East Peckham & Paddock Wood.