| Brilliant Harvest Farms Limited | Wells | 2016 |
| Brimbles of Mansfield Limited | Mansfield | 2004 |
| Brimco (Notts) Limited | Mansfield | 2018 |
| Brimpts Contracting Ltd | Princetown | 2022 |
| Brin Estate Limited | Inverness | 2017 |
| Brindle Distillery Limited | Chorley | 2017 |
| Brindlebay Limited | Huntingdon | 2022 |
| Brindley Farms Limited | Albrighton | 1976 |
| Brindley Hall Limited | London | 2019 |
| Brington Farm Limited | Ely | 2018 |
| Briningham Farms Limited | Norfolk | 1998 |
| Brinklefields Ltd | Lincoln | 2025 |
| Brinkley Stud Limited | Burrough Green | 2019 |
| Brinksworth Mechanised Tree Services Ltd | Dursley | 2024 |
| Brinksworth Tree Services Limited | Chipping Sodbury | 2023 |
| Brinsden Equestrian Services Limited | Plymouth | 2026 |
| Brinsea Farm Ltd | Taunton | 2015 |
| Brinvale Bird Foods Limited | Grantham | 2012 |
| Brisbane Glen Estate Company, Limited | West Kilbride | 1933 |
| Brisca Fisheries Limited | Dorking | 2006 |
| Briscwm Farm Limited | Cardigan | 2008 |
| Bristol Channel Fisheries Limited | Gloucester | 1982 |
| Bristol Christmas Tree Farm Ltd | Bristol | 2015 |
| Bristol Fish Project C.I.C. | Bristol | 2014 |
| Bristol Fungarium Ltd | Bristol | 2019 |
| Bristol Incubators Limited | Bristol | 1996 |
| Bristol Microgreens Ltd | Bristol | 2017 |
| Bristol Tree Services Ltd | Bristol | 2017 |
| Bristow Brothers Agri Limited | Hereford | 2019 |
| Brisworthy Limited | Wokingham | 2022 |
| Brit Pharma Ltd | Huddersfield | 2024 |
| Britagro Limited | Harlow | 2024 |
| Britannia Fishing Limited | Hastings | 2015 |
| Britannia of Beesands Ltd | Torquay | 2019 |
| Britblooms Plants Ltd | London | 2026 |
| British Appaloosa Society | Wantage | 2003 |
| British Apples and Pears Limited | Louth | 1990 |
| British Aquacare Ltd | Kent | 2025 |
| British Association of Green Crop Driers Limited(The) | York | 1963 |
| British Beet Research Organisation | Norwich | 2000 |
| British Bleu DU Maine Sheep Society Limited(The) | Usk | 1982 |
| British Breeding | Woolpit | 2019 |
| British Cattle Breeders Club Limited | Buxton | 1950 |
| British Charolais Cattle Society Limited (the) | Kenilworth Warwickshire | 1962 |
| British Charollais Sheep Society Limited(The) | Wymondham | 1977 |
| British Ember Ltd | Barnstaple | 2025 |
| British HEN Welfare Trust | South Molton | 2012 |
| British Herbs Association Limited | Louth | 2025 |
| British Indo UK Ltd | Leicester | 2024 |
| British Limousin Cattle Society Limited | Leamington Spa | 1970 |
| British Moorlands Ltd | Bournemouth | 2005 |
| British Peas and Beans Association Limited | Louth | 2025 |
| British Percheron Horse Society(Incorporated)(The) | Fordingbridge | 1919 |
| British Rouge DE L'Ouest Sheep Society | Carlisle | 1987 |
| British Wheatfields Limited | Ware | 1940 |
| Britnell Tree Services Ltd | Newark | 2015 |
| Brittain Farming Limited | Doncaster | 2009 |
| Britten Farriery Ltd | Dereham | 2019 |
| Brittlebank Limited | Staffordshire | 2007 |
| Britton Vineyards Ltd | Clacton-On-Sea | 2023 |
| Brittons Farming | Cambridge | 2007 |
| Brittons Plant Nurseries Limited | Wellingborough | 2003 |
| Brixham Sea Farms Limited | Fareham | 1996 |
| Brixham Trawler Agents Limited | South Devon | 1987 |
| Brixworth Farming Company Limited | Northampton | 2000 |
| Brizlincote Farm Co. Ltd | Burton-On-Trent | 2025 |
| BRL Strachan Ltd | Peterhead | 2020 |
| Brnt Live Long Ltd | Havant | 2019 |
| BRO Agriculture Ltd | Edinburgh | 2021 |
| Broachdale Birds Limited | Driffield | 2005 |
| Broad Lane Farm Ltd | London | 2009 |
| Broad Meadows Hampshire Ltd | Southampton | 2024 |
| Broad Oak Tree Consultants Limited | Haywards Heath | 2004 |
| Broad Valley Livery Stables Ltd | Nottingham | 2026 |
| Broadacres Leisure Limited | Hanbury | 1993 |
| Broadacres Limited | Maldon | 1994 |
| Broadbent Estates Limited | Glossop | 2024 |
| Broadbent Habitats Ltd | Peterborough | 2022 |
| Broadbridge Farms Limited | Chichester | 1970 |
| Broadcar Farm Livery Limited | Macclesfield | 2026 |
| Broadfield Farming Company Limited | Biggar | 1991 |
| Broadgate Fishing Limited | | 2003 |
| Broadhaven Fishing Company Ltd | Wick | 2014 |
| Broadhay Eggs Ltd | Whitchurch | 2010 |
| Broadhead Estates Limited | Edgworth | 2018 |
| Broadholme Equine Ltd | Ashbourne | 2019 |
| Broadhurst Agency UK Limited | Newmarket | 2023 |
| Broadland Eggs Ltd | Norwich | 2003 |
| Broadland Equestrian Limited | Park Farm Hotel, Norwich Road | 2014 |
| Broadland Forestry Ltd | Abernethy | 2026 |
| Broadland Properties Limited | North Yorkshire | 1950 |
| Broadland Tree Services Limited | Attleborough | 2026 |
| Broadlands Enterprises Ltd | London | 2026 |
| Broadleaf Midlands Tree Care Ltd | Loughborough | 2021 |
| Broadleaf Tree Services Ltd | | 2005 |
| Broadleaf Tree Surgery Limited | Basildon | 2017 |
| Broadleaf Wood Fuel Limited | Longniddry | 2012 |
| Broadleaze Farm Enterprises Limited | Yeovil | 1986 |
| Broadley Fold Farm Ltd | Rochdale | 2022 |
| Broadmead Estate Services Limited | Berkshire | 2001 |