Counties 3 Berks/Bucks & Oxon
Counties 3 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, with the original Berks/Bucks & Oxon 1 division becoming the Berks/Bucks & Oxon Premier and Berks/Bucks & Oxon 1 becoming, in effect, division 2 of the system. Rather confusingly promoted 1st teams would go up into the Berks/Bucks & Oxon Premier while 2nd, 3rd and 4th teams would move into Berks/Bucks & Oxon Premier A.
The league would be restructured further in 2011-12 with the re-introduction of a new tier 2 competition - the Berks/Bucks & Oxon Championship and the cancellation of Berks/Bucks & Oxon Premier A. This meant that Berks/Bucks & Oxon 1 would be for lower teams and below only with no chance of promotion to a higher league.
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. Promotion is to Counties 2 Berks/Bucks & Oxon (North) or Counties 2 Berks/Bucks & Oxon (South) depending on location. Relegation is to Counties 4 Berks/Bucks & Oxon (North) or Counties 4 Berks/Bucks & Oxon (South) again depending on location.
2025-26
North
Departing were Banbury II and Risborough promoted to Counties 2 Berks/Bucks & Oxon (North) and Counties 2 Berks/Bucks & Oxon (South) respectively. Also leaving were Wallingford II on a level transfer to the South division.| Team | Ground | Capacity | Town/Village | Previous season |
| Banbury III | Bodicote Park | Banbury, Oxfordshire | Promoted from Counties 4 Berks/Bucks & Oxon (North) | |
| Bicester II | Oxford Road | Bicester, Oxfordshire | 10th | |
| Buckingham II | Floyd Field | Maids Moreton, Buckingham, Buckinghamshire | 4th | |
| Chinnor IV | Kingsey Road | 2,000 | Thame, Oxfordshire | Promoted from Counties 4 Berks/Bucks & Oxon (Central) |
| Chipping Norton II | Greystones | Chipping Norton, Oxfordshire | Promoted from Counties 4 Berks/Bucks & Oxon (North) | |
| Gosford All Blacks II | Stratfield Brake | Kidlington, Oxfordshire | Promoted from Counties 4 Berks/Bucks & Oxon (North) | |
| Harwell | Harwell Science and Innovation Campus | Didcot, Oxfordshire | 8th | |
| Oxford II | North Hinksey Park | North Hinksey, Oxford, Oxfordshire | 9th | |
| Oxford Harlequins III | Horspath Sports Ground | Horspath, Oxfordshire | 3rd | |
| Stow-on-the-Wold II | Oddington Road | Stow-on-the-Wold, Gloucestershire | 7th | |
| Witney III | Hailey Road | Witney, Oxfordshire | 6th |
South
Departing were Henley III, Bracknell III and Reading II all promoted to Counties 2 Berks/Bucks & Oxon (South).| Team | Ground | Capacity | Town/Village | Previous season |
| Aldermaston | Recreational Society | Aldermaston, Berkshire | 7th | |
| Berkshire Shire Hall | Berkshire County Sports Club | Sonning, Reading, Berkshire | 6th | |
| Farnham Royal | Farnham Royal Playing Fields | Slough, Berkshire | 11th | |
| High Wycombe II | Kingsmead Road | High Wycombe, Buckinghamshire | 5th | |
| Phoenix | The Sports Ground | Taplow, Buckinghamshire | 10th | |
| Reading III | Holme Park | Sonning, Reading, Berkshire | Promoted from Counties 4 Berks/Bucks & Oxon (Central) | |
| Reading Abbey II | Rosehill | Reading, Berkshire | 9th | |
| Thatcham | Henwicky Worthy Sports Field | Thatcham, Berkshire | Relegated from Counties 2 Berks/Bucks & Oxon (South) | |
| Wallingford II | Wallingford Sports Park | Wallingford, Oxfordshire | Level transfer from North divisiton | |
| Windsor II | Home Park | Windsor, Berkshire | 3rd |
2024–25
North
Departing were Faringdon, promoted to Counties 2 Berks/Bucks & Oxon (North). Abingdon II and Banbury III were relegated to Counties 4 Berks/Bucks & Oxon (North).Aylesbury II were initially placed in the league but withdrew, their place taken by Oxford II.
| Team | Ground | Capacity | Town/Village | Previous season |
| Banbury II | Bodicote Park | Banbury, Oxfordshire | Relegated from Counties 2 Berks/Bucks & Oxon (North) | |
| Bicester II | Oxford Road | Bicester, Oxfordshire | Promoted from Counties 4 Berks/Bucks & Oxon (North) | |
| Buckingham II | Floyd Field | Maids Moreton, Buckingham, Buckinghamshire | 7th | |
| Harwell | Harwell Science and Innovation Campus | Didcot, Oxfordshire | Promoted from Counties 4 Berks/Bucks & Oxon (North) | |
| Oxford II | North Hinksey Park | North Hinksey, Oxford, Oxfordshire | New entry | |
| Oxford Harlequins III | Horspath Sports Ground | Horspath, Oxfordshire | Relegated from Counties 2 Berks/Bucks & Oxon (North) | |
| Risborough | Princes Risborough School | Princes Risborough, Buckinghamshire | 3rd | |
| Stow-on-the-Wold II | Oddington Road | Stow-on-the-Wold, Gloucestershire | 6th | |
| Wallingford II | Wallingford Sports Park | Wallingford, Oxfordshire | 4th | |
| Witney III | Hailey Road | Witney, Oxfordshire | 5th |
South
Departing were Amersham & Chiltern II and Marlow II promoted to Counties 2 Berks/Bucks & Oxon (South). Henley III finished as runners-up but could not be promoted into a league already featuring Henley II. Tadley II were relegated to Counties 4 Berks/Bucks & Oxon (South).| Team | Ground | Capacity | Town/Village | Previous season |
| Aldermaston | Recreational Society | Aldermaston, Berkshire | 9th | |
| Berkshire Shire Hall | Berkshire County Sports Club | Sonning, Reading, Berkshire | Promoted from Counties 4 Berks/Bucks & Oxon (South) | |
| Bracknell III | Lily Hill Park | Bracknell, Berkshire | 5th | |
| Farnham Royal | Farnham Royal Playing Fields | Slough, Berkshire | 8th | |
| Henley III | Dry Leas | Henley-on-Thames, Oxfordshire | Runners-up | |
| High Wycombe II | Kingsmead Road | High Wycombe, Buckinghamshire | Promoted from Counties 4 Berks/Bucks & Oxon (South) | |
| Phoenix | The Sports Ground | Taplow, Buckinghamshire | 6th | |
| Reading II | Holme Park | Sonning, Reading, Berkshire | 4th | |
| Reading Abbey II | Rosehill | Reading, Berkshire | Promoted from Counties 4 Berks/Bucks & Oxon (South) | |
| Windsor II | Home Park | Windsor, Berkshire | 7th |
2023–24
North
Departing were Oxford Harlequins III, promoted to Counties 2 Berks/Bucks & Oxon (North). Grove II and Didcot II were relegated.| Team | Ground | Capacity | Town/Village | Previous season |
| Abingdon II | Southern Sports Park | Abingdon, Oxfordshire | 8th | |
| Aylesbury II | Ostler's Field | Weston Turville, Aylesbury, Buckinghamshire | 3rd | |
| Banbury III | Bodicote Park | Banbury, Oxfordshire | 7th | |
| Buckingham II | Floyd Field | Maids Moreton, Buckingham, Buckinghamshire | 2nd | |
| Faringdon | Folly Sports Park | Faringdon, Oxfordshire | Relegated from Counties 2 Berks/Bucks & Oxon (North) | |
| Risborough | Princes Risborough School | Princes Risborough, Buckinghamshire | 4th | |
| Stow-on-the-Wold II | Oddington Road | Stow-on-the-Wold, Gloucestershire | Promoted from Counties 4 Berks/Bucks & Oxon (North) | |
| Wallingford II | Wallingford Sports Park | Wallingford, Oxfordshire | 5th | |
| Witney III | Hailey Road | Witney, Oxfordshire | 6th |
South
Departing were Crowthorne promoted to Counties 2 Berks/Bucks & Oxon (South) having finished as runners-up to champions Rams IV who did not return for the campaign and returned to their local merit league. Also leaving were Reading Abbey II and High Wycombe II, both relegated.| Team | Ground | Capacity | Town/Village | Previous season |
| Aldermaston | Recreational Society | Aldermaston, Berkshire | Relegated from Counties 2 Berks/Bucks & Oxon (South) | |
| Amersham & Chiltern II | Weedon Lane | Amersham, Buckinghamshire | Relegated from Counties 2 Berks/Bucks & Oxon (North) | |
| Bracknell III | Lily Hill Park | Bracknell, Berkshire | 3rd | |
| Farnham Royal | Farnham Royal Playing Fields | Slough, Berkshire | Promoted from Counties 4 Berks/Bucks & Oxon (South) | |
| Henley III | Dry Leas | Henley-on-Thames, Oxfordshire | Dropped from Counties 2 Berks/Bucks & Oxon (South) | |
| Marlow II | Riverwoods Drive | Marlow, Buckinghamshire | 6th | |
| Phoenix | The Sports Ground | Taplow, Buckinghamshire | 5th | |
| Reading II | Holme Park | Sonning, Reading, Berkshire | Relegated from Counties 2 Berks/Bucks & Oxon (South) | |
| Tadley II | Red Lane | Aldermaston, Berkshire | 4th | |
| Windsor II | Home Park | Windsor, Berkshire | 7th |
2022–23
This was the first season following the RFU Adult Competition Review.North
| Team | Ground | Capacity | Town/Village | Previous season |
| Abingdon II | Southern Sports Park | Abingdon, Oxfordshire | ||
| Aylesbury II | Ostler's Field | Weston Turville, Aylesbury, Buckinghamshire | ||
| Banbury III | Bodicote Park | Banbury, Oxfordshire | ||
| Buckingham II | Floyd Field | Maids Moreton, Buckingham, Buckinghamshire | ||
| Didcot II | Boundary Park | Didcot, Oxfordshire | ||
| Grove II | Cane Lane | Grove, Oxfordshire | ||
| Oxford Harlequins III | Horspath Sports Ground | Horspath, Oxfordshire | ||
| Risborough | Princes Risborough School | Princes Risborough, Buckinghamshire | ||
| Wallingford II | Wallingford Sports Park | Wallingford, Oxfordshire | ||
| Witney III | Hailey Road | Witney, Oxfordshire |
South
| Team | Ground | Capacity | Town/Village | Previous season |
| Bracknell III | Lily Hill Park | Bracknell, Berkshire | ||
| Crowthorne | The Crows New Nest | Crowthorne, Berkshire | ||
| High Wycombe II | Kingsmead Road | High Wycombe, Buckinghamshire | ||
| Marlow II | Riverwoods Drive | Marlow, Buckinghamshire | ||
| Phoenix | The Sports Ground | Taplow, Buckinghamshire | ||
| Rams IV | Old Bath Road | Sonning, Reading, Berkshire | ||
| Reading Abbey II | Rosehill | Reading, Berkshire | ||
| Tadley II | Red Lane | Aldermaston, Berkshire | ||
| Windsor II | Home Park | Windsor, Berkshire |
2017–2022
Contested but not as an RFU administered league.Participating clubs 2016–17
- Amersham & Chiltern II
- Aylesbury II
- Bracknell II
- Chinnor III
- Maidenhead IV
- Reading II
- Reading Abbey II
- Redingensians III
- Thatcham II
- Windsor II
- Witney II
Participating clubs 2012–13
- Beaconsfield II
- Bracknell III
- Chinnor III
- Henley III
- High Wycombe II
- Maidenhead II
- Marlow II
- Reading II
- Redingensians III
- Windsor II
- Witney II