Counties 4 Berks/Bucks & Oxon
Counties 4 Berks/Bucks & Oxon is an English rugby union league featuring teams from Berkshire, Buckinghamshire and Oxfordshire.
The division was created in 2004–05 as part of a complete overhaul of the Berks/Bucks & Oxon league, with a large number of 2nd, 3rd and 4th teams entering at various levels, and was divided into north and south regions, becoming the third division of the league structure with promoted teams going into Berks/Bucks & Oxon 1 and there being no relegation.
Further league restructuring in 2011 saw Berks/Bucks & Oxon 2 become one league instead of two regional divisions and newly created divisions below it meant that relegation was introduced. Changes above the division meant that 1st teams were split from 2nd, 3rd and 4th teams and Berks/Bucks & Oxon 1 was the highest level that teams in Berks/Bucks & Oxon 2 and below could reach in the system.
Following the RFU Adult Competition Review the structure changed once more with reserve teams and first teams competing in the same leagues, the competition administered centrally rather than by county constituent bodies and a North / South divisional split. A Central division was added ahead of season 2024–25. Promotion is to Counties 3 Berks/Bucks & Oxon (North) or Counties 3 Berks/Bucks & Oxon (South) depending on location. Relegation is to the merit leagues.
2025–26
For the new season the league was consolidated back to two divisions with the Central division being dispensed with.Chinnor IV and Reading III were promoted from the Central division to Counties 3 Berks/Bucks & Oxon (North) and Counties 3 Berks/Bucks & Oxon (South) respectively. Aylesbury II and Littlemore were level transferred into the North division while Reading Abbey III did not return for the new season.
North
Departing were Gosford All Blacks II, Banbury III and Chipping Norton II promoted to Counties 3 Berks/Bucks & Oxon (North) as the top three respectively.| Team | Ground | Capacity | Town/Village | Previous season |
| Abingdon II | Southern Sports Park | Abingdon, Oxfordshire | 5th | |
| Aylesbury III | Ostler's Field | Weston Turville, Aylesbury, Buckinghamshire | Level transfer from Central | |
| Didcot II | Boundary Park | Didcot, Oxfordshire | 4th | |
| Grove II | Cane Lane | Grove, Oxfordshire | Re-entry | |
| Littlemore | Northfield Close | Littlemore, Oxfordshire | Level transfer from Central | |
| Swindon College Old Boys II | Nationwide Sports Pavilion | Swindon, Wiltshire | Relegated from Counties 3 Dorset & Wilts North |
South
There was no promotion from the South league.Crowthorne re-joined the pyramid having withdrawn from Counties 2 Berks/Bucks & Oxon in season 2024-25.
| Team | Ground | Capacity | Town/Village | Previous season |
| Bracknell IV | Lily Hill Park | Bracknell, Berkshire | 2nd | |
| Crowthorne | New Nest | Crowthorne, Berkshire | Re-entry | |
| Hungerford II | Triangle Field | Hungerford, Berkshire | 5th | |
| Tadley II | Red Lane | Aldermaston, Berkshire | 3rd | |
| Thatcham II | Henwicky Worthy Sports Field | Thatcham, Berkshire | 4th | |
| Windsor III | Home Park | Windsor, Berkshire | 1st |
2024–25
For the new season the league was further sub-divided into three five-club competitions with the addition of a Central division.North
Departing were Harwell and Bicester II, promoted to Counties 3 Berks/Bucks & Oxon (North). Grove II did not return for the new campaign. Chinnor IV and Littlemore were level transferred to the new Central division.| Team | Ground | Capacity | Town/Village | Previous season |
| Abingdon II | Southern Sports Park | Abingdon, Oxfordshire | Relegated from Counties 3 Berks/Bucks & Oxon (North) | |
| Banbury III | Bodicote Park | Banbury, Oxfordshire | Relegated from Counties 3 Berks/Bucks & Oxon (North) | |
| Chipping Norton II | Greystones | Chipping Norton, Oxfordshire | New entry | |
| Didcot II | Boundary Park | Didcot, Oxfordshire | 7th | |
| Gosford All Blacks II | Stratfield Brake | Kidlington, Oxfordshire | 5th |
Central
| Team | Ground | Capacity | Town/Village | Previous season |
| Aylesbury III | Ostler's Field | Weston Turville, Aylesbury, Buckinghamshire | New entry | |
| Chinnor IV | Kingsey Road | 2,000 | Thame, Oxfordshire | 4th |
| Littlemore | Northfield Close | Littlemore, Oxfordshire | 6th | |
| Reading III | Holme Park | Sonning, Reading, Berkshire | 4th | |
| Reading Abbey III | Rosehill | Reading, Berkshire | New entry |
South
Departing were Reading Abbey II, Berkshire Shire Hall and High Wycombe II, all promoted to Counties 3 Berks/Bucks & Oxon (South). Reading III were level transferred to the new Central division.| Team | Ground | Capacity | Town/Village | Previous season |
| Bracknell IV | Lily Hill Park | Bracknell, Berkshire | 5th | |
| Hungerford II | Triangle Field | Hungerford, Berkshire | 6th | |
| Tadley II | Red Lane | Aldermaston, Berkshire | Relegated from Counties 3 Berks/Bucks & Oxon (South) | |
| Thatcham II | Henwicky Worthy Sports Field | Thatcham, Berkshire | 7th | |
| Windsor III | Home Park | Windsor, Berkshire | New entry |
2023–24
North
Departing were Stow-on-the-Wold II, promoted to Counties 3 Berks/Bucks & Oxon (North) as runners-up behind champions Tring III who were not promoted but instead returned to merit league competition.| Team | Ground | Capacity | Town/Village | Previous season |
| Bicester II | Oxford Road | Bicester, Oxfordshire | 3rd | |
| Chinnor IV | Kingsey Road | 2,000 | Thame, Oxfordshire | 5th |
| Didcot II | Boundary Park | Didcot, Oxfordshire | Relegated from Counties 3 Berks/Bucks & Oxon (North) | |
| Gosford All Blacks II | Stratfield Brake | Kidlington, Oxfordshire | 7th | |
| Grove II | Cane Lane | Grove, Oxfordshire | Relegated from Counties 3 Berks/Bucks & Oxon (North) | |
| Harwell | Harwell Science and Innovation Campus | Didcot, Oxfordshire | 4th | |
| Littlemore | Northfield Close | Littlemore, Oxfordshire | 6th |
South
Departing were Farnham Royal, promoted to Counties 3 Berks/Bucks & Oxon (South) as runners-up behind Drifters as champions who were not promoted but instead returned to merit league competition as did Phoenix II.| Team | Ground | Capacity | Town/Village | Previous season |
| Berkshire Shire Hall | Berkshire County Sports Club | Sonning, Reading, Berkshire | 3rd | |
| Bracknell IV | Lily Hill Park | Bracknell, Berkshire | 6th | |
| High Wycombe II | Kingsmead Road | High Wycombe, Buckinghamshire | Relegated from Counties 3 Berks/Bucks & Oxon (South) | |
| Hungerford II | Triangle Field | Hungerford, Berkshire | 5th | |
| Reading III | Holme Park | Sonning, Reading, Berkshire | New entry | |
| Reading Abbey II | Rosehill | Reading, Berkshire | Relegated from Counties 3 Berks/Bucks & Oxon (South) | |
| Thatcham II | Henwicky Worthy Sports Field | Thatcham, Berkshire | 4th |
2022–23
This was the first season following the RFU Adult Competition Review.North
| Team | Ground | Capacity | Town/Village | Previous season |
| Bicester II | Oxford Road | Bicester, Oxfordshire | ||
| Chinnor IV | Kingsey Road | 2,000 | Thame, Oxfordshire | |
| Gosford All Blacks II | Stratfield Brake | Kidlington, Oxfordshire | ||
| Harwell | Harwell Science and Innovation Campus | Didcot, Oxfordshire | ||
| Littlemore | Northfield Close | Littlemore, Oxfordshire | ||
| Stow-on-the-Wold II | Oddington Road | Stow-on-the-Wold, Gloucestershire | ||
| Tring III | Pendley Sports Centre | Tring, Hertfordshire |
South
| Team | Ground | Capacity | Town/Village | Previous season |
| Berkshire Shire Hall | Berkshire County Sports Club | Sonning, Reading, Berkshire | ||
| Bracknell IV | Lily Hill Park | Bracknell, Berkshire | ||
| Drifters | Farnham Common | Farnham Common, Buckinghamshire | ||
| Farnham Royal | Farnham Royal Playing Fields | Slough, Berkshire | ||
| Hungerford II | Triangle Field | Hungerford, Berkshire | ||
| Phoenix II | The Sports Ground | Taplow, Buckinghamshire | ||
| Thatcham II | Henwicky Worthy Sports Field | Thatcham, Berkshire |
2017–22
Contested but not as an RFU administered league.Participating clubs 2016–17
- Beaconsfield II
- Buckingham II
- Henley III
- High Wycombe II
- Marlow II
- Newbury II
- Oxford Harlequins II
- Redingensians IV
- Windsor III
- Witney III
Participating clubs 2012–13
- Alchester II
- Aylesbury II
- Bicester II
- Bletchley II
- Buckingham II
- Oxford Harlequins II
- Reading Abbey II
- Tadley II
- Wallingford II
- Witney III