Counties 4 Kent
Counties 4 Kent is an English level 10 Rugby Union League and is made up of teams predominantly from south-east London and Kent. The teams play home and away matches from September through to April. Currently promoted teams move up to Kent 1 and there is no relegation although until the 2007–08 season teams could drop down to Kent 3. Now a single division, in the past Kent 2 was divided into regional divisions - Kent 2 East and Kent 2 West. Relegated teams drop down to Counties 5 Kent. Following the RFU's Adult Competition Review, from season 2022–23 it adopted its current name Counties 4 Kent.
Each year some of the clubs in this division also take part in the RFU Junior Vase - a level 9-12 national competition.
Teams for 2025–26
Departing were Canterbury III and Old Williamsonians, promoted to Counties 3 Kent while Medway III were relegated to Counties 5 Kent.Footscray did not return for the new season.
| Team | Ground | Capacity | City/Area | Previous season |
| Beckenham III | Balmoral Avenue | Beckenham, London | Promoted from Counties 5 Kent | |
| Bromley II | Barnet Wood Road | Hayes, London | 3rd | |
| Cliffe Crusaders | Recreation Ground | Cliffe, Kent | 4th | |
| Dartfordians II | Bourne Road | Bexley, London | 6th | |
| East Peckham & Paddock Wood | Putlands Sports & Leisure Centre | Paddock Wood, Kent | Promoted from Counties 5 Kent | |
| Faversham | Recreation Ground | Faversham, Kent | 7th | |
| King's College Hospital | Dulwich Sports Ground | Dulwich, London | 10th | |
| Old Colfeians II | Horn Park | Lee, London | 9th | |
| Rye | New Road | Rye, East Sussex | 5th | |
| Sevenoaks III | Knole Paddock | 1,000 | Sevenoaks, Kent | Promoted from Counties 5 Kent |
| Sheppey | Stupple Field | Minster, Kent | 8th |
Teams for 2024–25
Departing were Beckenham II, Brockleians and Old Gravesendians, all promoted to Counties 3 Kent. Sidcup III and Lordswood were relegated to Counties 5 Kent. Footscray had finished 11th and would ordinarily have been relegated but for Sidcup electing to drop down a division.Joining were Faversham relegated from Counties 3 Kent. Bromley II, Canterbury III, Old Colfeians II, all promoted from Counties 5 Kent. Rye completed the line-up having re-joined the RFU leagues after an extended absence.
| Team | Ground | Capacity | City/Area | Previous season |
| Bromley II | Barnet Wood Road | Hayes, London | Promoted from Counties 5 Kent | |
| Canterbury III | Marine Travel Ground | 1,500 | Canterbury, Kent | Promoted from Counties 5 Kent |
| Cliffe Crusaders | Recreation Ground | Cliffe, Kent | 5th | |
| Dartfordians II | Bourne Road | Bexley, London | 4th | |
| Faversham | Recreation Ground | Faversham, Kent | Relegated from Counties 3 Kent | |
| Footscray | Footscray Playing Fields | New Eltham, London | 11th | |
| King's College Hospital | Dulwich Sports Ground | Dulwich, London | 8th | |
| Medway III | Priestfields | Rochester, Kent | 10th | |
| Old Colfeians II | Horn Park | Lee, London | Promoted from Counties 5 Kent | |
| Old Williamsonians | Sir Joseph Williamson's Mathematical School | Rochester, Kent | 7th | |
| Rye | New Road | Rye, East Sussex | Re-entry | |
| Sheppey | Stupple Field | Minster, Kent | 6th |
Teams for 2023–24
Departing were Tonbridge Juddians III and Sittingbourne promoted to Counties 3 Kent. Four clubs Beccehamian II, Greenwich and Askeans were relegated to Counties 5 Kent. Weavering Warriors elected to drop into the Kent RFU merit leagues.Joining were King's College Hospital and Footscray, both relegated from Counties 3 Kent, together with Beckenham II and Medway III
| Team | Ground | Capacity | City/Area | Previous season |
| Beckenham II | Balmoral Avenue | Beckenham, London | ||
| Brockleians | Civil Service Sports Ground | Eltham, London | 4th | |
| Cliffe Crusaders | Recreation Ground | Cliffe, Kent | 3rd | |
| Dartfordians II | Bourne Road | Bexley, London | 7th | |
| Footscray | Footscray Playing Fields | New Eltham, London | Relegated from Counties 3 Kent | |
| King's College Hospital | Dulwich Sports Ground | Dulwich, London | Relegated from Counties 3 Kent | |
| Lordswood | Lordswood Sports & Social Club | Chatham, Kent | 9th | |
| Medway III | Priestfields | Rochester, Kent | ||
| Old Gravesendians | Fleetway Sports Ground | Gravesend, Kent | 8th | |
| Old Williamsonians | Sir Joseph Williamson's Mathematical School | Rochester, Kent | 6th | |
| Sheppey | Stupple Field | Minster, Kent | 5th | |
| Sidcup III | Crescent Farm | Sidcup, Kent | 10th |
Teams for 2022–23
This was the first season following the RFU Adult Competition Review with the league adopting its new name of Counties 4 Kent.Returning were 7 of the 9 teams who competed in the previous season's league.
Departing were Dartford Valley and Whitstable, promoted to Counties 3 Kent. There was no relegation.
Joining from Kent 1 were Brockleians, Cliffe Crusaders and Old Willamsonians. The league was supplemented by the addition of Tonbridge Juddians III, Beccehamian II, Dartfordians II and Sidcup III.
| Team | Ground | Capacity | City/Area | Previous season |
| Askeans | Rectory Field | 3,500 | Blackheath, London | 9th |
| Beccehamian II | Sparrow's Den | West Wickham, London | New entry | |
| Brockleians | Civil Service Sports Ground | Eltham, London | Relegated from Kent 1 | |
| Cliffe Crusaders | Recreation Ground | Cliffe, Kent | Joined from Kent 1 | |
| Dartfordians II | Bourne Road | Bexley, London | New entry | |
| Greenwich | Plumstead Common | Plumstead, London | 8th | |
| Lordswood | Lordswood Sports & Social Club | Chatham, Kent | 7th | |
| Old Gravesendians | Fleetway Sports Ground | Gravesend, Kent | 4th | |
| Old Williamsonians | Sir Joseph Williamson's Mathematical School | Rochester, Kent | Joined from Kent 1 | |
| Sheppey | Stupple Field | Minster, Kent | 5th | |
| Sidcup III | Crescent Farm | Sidcup, Kent | New entry | |
| Sittingbourne | Gore Court Cricket Club | Sittingbourne, Kent | 3rd | |
| Tonbridge Juddians III | The Slade | 1,500 | Tonbridge, Kent | New entry |
| Weavering Warriors | Bicknor Road | Maidstone, Kent | 6th |
Teams for 2021–22
The teams competing in 2021–22 achieved their places in the league based on performances in 2019–20, the 'previous season' column in the table below refers to that season not 2020–21.Bexley, who finished 8th in 2019–20, played several of the early fixtures but withdrew from the league in November 2021.
Swanley RFC, a new entry, competed until January 2022 before withdrawing from the league.
| Team | Ground | Capacity | City/Area | Previous season |
| Askeans | Rectory Field | 3,500 | Blackheath, London | 10th |
| Dartford Valley | Leigh Academy | Dartford, Kent | 3rd | |
| Greenwich | Plumstead Common | Plumstead, London | 9th | |
| Lordswood | Lordswood Sports & Social Club | Chatham, Kent | 5th | |
| Old Gravesendians | Fleetway Sports Ground | Gravesend, Kent | Relegated from Kent 1 | |
| Sheppey | Stupple Field | Minster, Kent | 7th | |
| Sittingbourne | Gore Court Cricket Club | Sittingbourne, Kent | 4th | |
| Swanley | Swanley Recreation Ground | Swanley, Kent | New entry | |
| Weavering Warriors | Bicknor Road | Maidstone, Kent | 6th | |
| Whitstable | Reeves Way | Chestfield, Kent | Relegated from Kent 1 |