| Club | League/Division | Lvl | Change from 2024–25 |
|---|
| BTC Southampton | Hampshire County League Div.Two | 8 | New club |
| Bacton United 89 | Suffolk County League Premiership | 7 | From Suffolk County League Championship |
| Badshot Lea | Southern Region League Premier Div. | 5 |
| Baldock Town | Beds & Herts County League Div.One | 8 |
| Baldon Sports | South East Counties League Kent Div.One West | 8 | New club |
| Balls to Cancer | Birmingham County League Div.One | 8 | From Birmingham County League Premier Div. |
| Banwell | Somerset County League Div.One | 7 |
| Barking | London & S.East Regional League Premier Div. | 5 |
| Barnsley | Sheffield & Hallamshire County League Div.Two | 8 | From National League Div.One North (demoted) |
| Barnsley Women | National League Div.One Midlands | 4 |
| Barnsley Women Reserves | Sheffield & Hallamshire County League Div.One | 7 | New club |
| Barton Town | Lincolnshire County Championship | 8 | From Lincolnshire County League North Div. |
| Barton United (Bucks) | Thames Valley Counties League Div.One | 7 |
| Barton United (Bucks) Development | Thames Valley Counties League Div.Two North | 8 | From Thames Valley Counties League Div.Three West |
| Barton United (Lincolnshire) | Lincolnshire County Championship | 8 | From Lincolnshire County League North Div. |
| Basford United | East Midlands Regional League Div.One Central | 6 |
| Basingstoke Town | Hampshire County League Div.One | 7 |
| Bath City | South West Regional League Div.One North | 6 |
| Bath City Development | Somerset County League Div.One | 7 |
| Beaconsfield Town | Southern Region League Premier Div. | 5 |
| Beaconsfield Town Reserves | Thames Valley Counties League Div.Two North | 8 |
| Beccles Town | Norfolk County League Div.Two | 8 |
| Beecholme Belles | South East Counties League Surrey Premier Div. | 8 |
| Belper Town | East Midlands Regional League Div.One North | 6 |
| Belper Town Development | Derbyshire County League Div.Two | 8 |
| Bemerton Heath Harlequins | Southern Region League Div.One South | 6 | From Wiltshire County League Premier Div. |
| Berkhamsted | Beds & Herts County League Premier Div. | 7 | From Beds & Herts County League Div.One |
| Berwick Rangers Community Academy | North East Regional League Div.One North | 6 | From Northumberland League Premiership |
| Betteshanger Welfare | South East Counties League Premier Div. | 7 | From South East Counties League Kent Div.One East |
| Beverley Town | East Riding County League Div.One | 7 |
| Bexhill United | London & S.East Regional League Div.One South | 6 |
| Biddenden | South East Counties League Kent Div.One East | 8 |
| Bideford | Devon County League Premier Div. | 7 | From South West Regional League Div.One South |
| Biggleswade United | Eastern Regional League Div.One North | 6 |
| Biggleswade United Development | Cambridgeshire County League Div.Two | 8 | New club |
| Billericay Town | National League Premier Div. South | 3 |
| Bilston Town | Staffordshire County League Div.One | 8 | Returned club |
| Bingham Town Red | Nottinghamshire County League Div.Two | 8 |
| Birmingham City | Women's Super League 2 | 2 |
| Birmingham Medsoc | Birmingham County League Div.One | 8 |
| Birstall United | Leicestershire County League Div.One | 7 |
| Birtley Town | North East Regional League Div.One North | 6 | From Durham County League Div.One |
| Bishop Auckland | Durham County League Premier Div. | 7 | From North East Regional League Div.One North |
| Bishops Cannings | Wiltshire County League Development Div. | 8 | New club |
| Bishops Lydeard | South West Regional League Premier Div. | 5 |
| Bishops Lydeard Reserves | Somerset County League Div.Two | 8 | New club |
| Bishop's Cleeve | Gloucestershire County League Div.One | 7 |
| Bitton | South West Regional League Div.One North | 6 |
| Blaby & Whetstone | Leicestershire County League Div.Two | 8 |
| Blackburn CSC Reserves | Lancashire County League Premier Div. | 7 | From Lancashire County League Championship |
| Blackburn Eagles | Lancashire County League Premier Div. | 7 | From Lancashire County League Championship |
| Blackburn Rovers | National League Div.One North | 4 | From Women's Super League 2 (withdrew) |
| Blackpool | North West Regional League Div.One North | 6 |
| Blackpool Development | Lancashire County League Premier Div.]] | 7 |
| Blunsdon | Wiltshire County League Development Div. | 8 |
| Bodmin | Cornwall County League Premier Div. | 7 |
| Bognor Regis Town | London & S.East Regional League Div.One South | 6 |
| Boldmere St.Michaels | National League Div.One Midlands | 4 |
| Boldon | Durham County League Premier Div. | 7 |
| Bollington | Cheshire County League Championship | 8 | New club |
| Bolton Wanderers | North West Regional League Premier Div. | 5 | From North West Regional League Div.One North |
| Bolton Wanderers Reserves | North West Regional League Div.One North | 6 | From Lancashire County League Premier Div. |
| Boro Rangers | North Riding League Women's Premier Div. | 7 | From North Riding League Women's Div.One |
| Boroughbridge | West Riding County League Div.One | 8 | From West Riding County League Div.Two |
| Boston Town | Lincolnshire County Premier Div. | 7 |
| Boston United | Lincolnshire County Premier Div. | 7 |
| Bottesford Town | Lincolnshire County Premier Div. | 7 |
| Bournemouth Manor | Dorset County League Women's Div. | 7 | From Dorset League Development Div. |
| Bournemouth Poppies | Dorset County League Women's Div. | 7 | New club |
| Bournemouth Sports | National League Div.One South West | 4 |
| Bournemouth Sports Reserves | Southern Region League Div.One South | 6 |
| Bowers & Pitsea | Eastern Regional League Premier Div. | 5 |
| Bowers & Pitsea Reserves | Essex County League Premier Div. | 7 |
| Brackley Town Juniors | East Midlands Regional League Div.One South | 6 |
| Brackley Town Saints | Northamptonshire County League Div.One | 8 |
| Bradford City | North East Regional League Premier Div. | 5 |
| Bradford City U23s | West Riding County League Div.One | 8 |
| Bradworthy | Devon County League Premier Div. | 7 |
| Braintree Athletic | Essex County League Premier Div. | 7 | New club |
| Brandesburton | East Riding County League Div.Two | 8 |
| Brandon United | Durham County League Div.One | 8 |
| Brantham Athletic | Eastern Regional League Div.One South | 6 | From Suffolk County League Premier Div. |
| Brantham Athletic Development | Suffolk County League Premiership | 7 | From Suffolk County League Championship |
| Brantham Athletic Reserves | Suffolk County League Championship | 8 |
| Braunton | Devon County League Premier Div. | 7 | From Devon County League North & East Div. |
| Brayton Belles | West Riding County League Div.One | 8 |
| Brentford | London & S.East Regional League Premier Div. | 5 | From London & S.East Regional League Div.One North |
| Brentford "B" | Greater London County League Div.One South | 8 | From Greater London County League Premier Div. |
| Brentwood Town | Eastern Regional League Div.One South | 6 | From Essex County League Premier Div. |
| Brentwood Town Development | Essex County League Premier Div. | 7 | New club |
| Brett Vale | Essex County League Div.One | 8 | New club |
| Bridgwater United | National League Div.One South West | 4 |
| Bridlington Rovers | East Riding County League Div.Two | 8 |
| Bridport | Somerset County League Div.One | 7 | From Somerset County League Div.Two |
| Brigg Town | Lincolnshire County Premier Div. | 7 |
| Brightlingsea Regent | Essex County League Premier Div. | 7 |
| Brighton & Hove Albion | Women's Super League | 1 |
| Brighton Seagals | Sussex County League Championship | 8 |
| Brinsworth Whitehill | Sheffield & Hallamshire County League Div.Two | 8 | From Sheffield & Hallamshire County League Div.One |
| Bristol & West | Gloucestershire County League Div.One | 7 |
| Bristol Brunel | Gloucestershire County League Div.One | 7 |
| Bristol City | Women's Super League 2 | 2 |
| Bristol Rovers | National League Div.One South West | 4 |
| Broadbridge Heath | Sussex County League Premier Div. | 7 | New club |
| Brodsworth Welfare | Sheffield & Hallamshire County League Div.Two | 8 | From Sheffield & Hallamshire County League Div.Three |
| Bromleians | South East Counties League Div.One West | 8 |
| Bromley | London & S.East Regional League Div.One North | 6 |
| Bromley Development | South East Counties League Kent Div.One West | 8 | New club |
| Bromsgrove Sporting | West Midlands Regional League Div.One South | 6 |
| Bromsgrove Sporting Development | Midwest Counties League Div.One | 7 |
| Brookside Athletic | Leicestershire County League Div.One | 7 | From East Midlands Regional League Div.One Central |
| Brookside Athletic Reserves | Leicestershire County League Div.Two | 8 |
| Broomfield | Essex County League Div.One | 8 |
| Brundall Bolts | Norfolk County League Div.Two | 8 | New club |
| Brunsmere Athletic | North East Regional League Premier Div. | 5 | From North East Regional League Div.One South |
| Bugbrooke St. Michaels | Northamptonshire County League Premier Div. | 7 | From East Midlands Regional League Div.One South |
| Bure Valley | Norfolk County League Div.One | 7 |
| Bure Valley Development | Norfolk County League Div.Two | 8 | New club |
| Burgess Hill Town | Sussex County League Premier Div. | 7 | From Sussex County League Championship |
| Burghfield | Thames Valley Counties League Div.Two South | 8 | From Thames Valley Counties League Div.Three West |
| Burnley | National League Premier Div. North | 3 |
| Burnley Belvedere | Lancashire County League Championship | 8 |
| Burscough | Liverpool County League Div.One | 8 | New club |
| Burnley United | Lancashire County League Championship | 8 | New club |
| Bursledon | Southern Region League Div.One South | 6 |
| Burton Albion | West Midlands Regional League Premier Div. | 5 |
| Bury AFC | North West Regional League Premier Div. | 5 |
| Bury FC Development | Greater Manchester County League Div.One | 8 | Rejoined club |
| Bury FC Reserves | Greater Manchester County League Premier Div. | 7 | From Greater Manchester County League Div.One |
| Buxton | Derbyshire County League Div.One | 7 | From East Midlands Regional League Div.One North |
| Bury Town Community | Suffolk County League Championship | 8 | From Suffolk County League Premiership |
| Buxton Juniors | Derbyshire County League Div.Two | 8 | From Derbyshire County League Div.One |
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