| 2TG Consulting Limited | Information & communication | 2023 |
| 2TONE Creative Services Ltd | Professional & scientific | 2020 |
| 2WISTED Media Limited | Information & communication | 2015 |
| 2XGL Ltd | Manufacturing | 2019 |
| 2XL Holdings Ltd | Financial services | 2021 |
| 3 & 4 Princes Buildings Management Limited | Households | 2011 |
| 3 & 5 Station Road Keynsham Management Company Ltd | Real estate | 2011 |
| 3 10 Studio Ltd | Professional & scientific | 2014 |
| 3 Apsley Road (Bristol) Management Limited | Households | 1978 |
| 3 Berkeley Square Limited | Real estate | 2016 |
| 3 Boiling Wells Lane Management Company Limited | Extraterritorial | 2005 |
| 3 Brothers Burger & Pizza Ltd | Hospitality | 2025 |
| 3 Buckingham Place Limited | Real estate | 2001 |
| 3 Carters Trading Ltd | Wholesale & retail | 2021 |
| 3 Chantry Road Management Limited | Households | 1989 |
| 3 Chertsey Road Management Limited | Households | 2026 |
| 3 Christchurch Road (Management) Limited | Households | 1983 |
| 3 Clyde Park Management Limited | Households | 1977 |
| 3 College Fields Management Company Limited | Professional & scientific | 2014 |
| 3 Cotham Park Management Limited | Households | 1986 |
| 3 D Interiors Limited | Information & communication | 1996 |
| 3 Degrees Production Ltd | Arts & recreation | 2024 |
| 3 Dowry Place Ltd | Real estate | 2026 |
| 3 Dowry Place Residential Ltd | Real estate | 2026 |
| 3 Dowry Square Management Limited | Households | 1991 |
| 3 Duckmoor Road Management Company Limited | Households | 2011 |
| 3 EYE Infopark Limited | Information & communication | 2016 |
| 3 Gloucester ROW Management Company Limited | Households | 1986 |
| 3 Greenway Road Bristol Limited | Households | 1987 |
| 3 Hampton Park Redland Bristol Management Limited | Households | 1984 |
| 3 Henleaze Road Management Company Limited | Households | 1981 |
| 3 Howard Road Westbury Park Management Limited | Real estate | 1997 |
| 3 Imperial Road Management Company Limited | Real estate | 2003 |
| 3 Little Birds MAG Ltd | Hospitality | 2022 |
| 3 Manilla Road Management Company Limited | Households | 2004 |
| 3 Melrose Place Management Company Limited | Households | 2019 |
| 3 Melville Road Management Company Limited | Households | 1984 |
| 3 Meridian Road Management Company Limited | Households | 1976 |
| 3 Northcote Road Management Company Limited | Households | 1999 |
| 3 Osborne Road Management Company Limited | Households | 1997 |
| 3 Pembroke Road (BS8) Limited | Households | 1988 |
| 3 Pillar Aviation Limited | Transport & logistics | 2026 |
| 3 Pillar Energy Ltd | Energy | 2024 |
| 3 Point Building & Maintenance Ltd | Construction | 2025 |
| 3 Pylle Hill Crescent Management Company Limited | Households | 2004 |
| 3 Queens Avenue Management Limited | Households | 1990 |
| 3 Randall Road Management Limited | Households | 1982 |
| 3 Redland Park Bristol Limited | Hospitality | 1988 |
| 3 Richmond Hill Avenue Management Limited | Households | 1983 |
| 3 School Road Limited | Households | 2017 |
| 3 Sydenham Road Cotham Management Company Limited | Households | 1989 |
| 3 Systems Wellbeing C.I.C. | Health & social care | 2025 |
| 3 Trees Care and Support Ltd | Health & social care | 2007 |
| 3 Upper Oldfield Park Limited | Real estate | 1989 |
| 3 Victoria Square Management Limited | Households | 1983 |
| 3 Vyvyan Terrace (Clifton) Residents Management Limited | Households | 1989 |
| 3 West Mall, Clifton (Management) Limited | Households | 1986 |
| 3 Westmoreland Road Management Company Limited | Households | 1992 |
| 3 Wishes for Christmas Limited | Information & communication | 2023 |
| 3 York Place Clifton (Management) Limited | Households | 1992 |
| 3, Apsley Villas Maintenance Limited | Households | 1975 |
| 3-WAVE Services Limited | Professional & scientific | 2003 |
| 3/4 Cotham Grove Management Co. Ltd | Real estate | 1987 |
| 30 Archfield Road Bristol (Management) Limited | Professional & scientific | 1986 |
| 30 Arley Hill Management Company Limited | Households | 1979 |
| 30 Ashley Hill Management Company Limited | Households | 1992 |
| 30 Claremont Road Bishopston Management Limited | Households | 1984 |
| 30 Clifton Park Road (Bristol) Limited | Households | 2007 |
| 30 Conygre Grove Limited | Households | 2021 |
| 30 Cotham Vale Management Company Limited | Households | 1990 |
| 30 Downleaze Limited | Households | 2023 |
| 30 Goss Lane Management Limited | Administrative & support | 2014 |
| 30 Goss Lane Nailsea Ltd | Administrative & support | 2018 |
| 30 Hampton (Management) Company Limited | Households | 2002 |
| 30 Knowle Road Flat Management Limited | Professional & scientific | 1993 |
| 30 Lower Redland Road (Management) Limited | Households | 1986 |
| 30 Meadow Street Avonmouth Management Company Limited | Households | 2005 |
| 30 Meridian Place (Clifton) Limited | Households | 1983 |
| 30 Muller Avenue Management Company Limited | Real estate | 2015 |
| 30 Royal Park Management Company Limited | Real estate | 1980 |
| 30 South Road WSM Management Limited | Households | 2000 |
| 30 Southleigh Road Clifton Limited | Households | 2016 |
| 30 Sussex Place Management Limited | Other services | 1991 |
| 30 West Park Clifton Management Company Limited | Households | 2001 |
| 30,000 Trees CIC | Agriculture & fishing | 2025 |
| 300 Filton Avenue Management Company Limited | Households | 2011 |
| 3033 UK Limited | Wholesale & retail | 2019 |
| 305 Wells Road Management Limited | Households | 1982 |
| 306 Redcatch Road Management Company Limited | Real estate | 2006 |
| 307 KQ Limited | Real estate | 2025 |
| 31 Aberdeen Road Management Company Limited | Households | 1991 |
| 31 and 33 Cotham Road Management Company Limited(The) | Households | 1984 |
| 31 Anglesea Place Management Limited | Households | 1992 |
| 31 Apsley Road Management Company Limited | Households | 1999 |
| 31 Caledonia Place Management Company Limited | Households | 1972 |
| 31 Castle Road Clevedon Avon Flat Management Company Limited | Households | 1986 |
| 31 Church Road (Newport) Management Company Limited | Households | 2005 |
| 31 Hair and Beauty Limited | Other services | 2019 |
| 31 Henleaze Gardens (Bristol) Management Company Limited | Households | 2004 |
| 31 Howard Road Management Limited | Hospitality | 1988 |