| Bristol IT Company Ltd | Information & communication | 2009 |
| Bristol Juice Limited | Hospitality | 2024 |
| Bristol Junior Chamber(The) | Other services | 1982 |
| Bristol Kebab House Ltd | Hospitality | 2026 |
| Bristol Kettlebell Club Limited | Arts & recreation | 2009 |
| Bristol Kitchen Makeovers Ltd | Construction | 2021 |
| Bristol Kitchens and Building Ltd | Manufacturing | 2019 |
| Bristol Kongers Ltd | Education | 2023 |
| Bristol Kora CIC | Administrative & support | 2019 |
| Bristol Labels Limited | Other services | 2004 |
| Bristol Landscapes Ltd | Administrative & support | 2010 |
| Bristol Language School Limited | Education | 2012 |
| Bristol Latex Supplies Limited | Wholesale & retail | 1997 |
| Bristol Latvian Culture Events Ltd | Other services | 2023 |
| Bristol Law Centre | Professional & scientific | 1986 |
| Bristol Law School Limited | Extraterritorial | 1989 |
| Bristol Law Society(The) | Education | 1871 |
| Bristol Lawn Tennis Club Limited | Arts & recreation | 1997 |
| Bristol Learning Technology Ltd | Information & communication | 2024 |
| Bristol Lease Bikes Ltd | Administrative & support | 2024 |
| Bristol Leasehold Management (BLM) Ltd | Real estate | 2018 |
| Bristol Legal Services Limited | Professional & scientific | 1984 |
| Bristol Leisure Events Limited | Hospitality | 2017 |
| Bristol Leisure Limited | Arts & recreation | 2014 |
| Bristol Letting Houses Ltd | Real estate | 2023 |
| Bristol Lettings Ltd | Real estate | 2024 |
| Bristol Light Ltd | Real estate | 2021 |
| Bristol Lime Services Ltd | Construction | 2022 |
| Bristol Little Free Libraries | Other services | 2019 |
| Bristol Living Limited | Energy | 2007 |
| Bristol Loaf Beacon Limited | Hospitality | 2025 |
| Bristol Loaf Redfield Limited | Hospitality | 2025 |
| Bristol Local Taxi Ltd | Administrative & support | 2017 |
| Bristol Locksmiths Ltd | Other services | 2007 |
| Bristol Longevity Ltd | Health & social care | 2025 |
| Bristol Luxury Bathrooms Limited | Real estate | 2023 |
| Bristol Mailing Services Limited | Extraterritorial | 1995 |
| Bristol Maintenance Services Limited | Construction | 2024 |
| Bristol Malayali Association CIC | Health & social care | 2024 |
| Bristol Management Centre Limited | Education | 1990 |
| Bristol Managing Agents Ltd | Households | 2018 |
| Bristol Manor Farm AFC Limited | Arts & recreation | 2017 |
| Bristol Maritime Limited | Arts & recreation | 2007 |
| Bristol Maritime Robotics Limited | Professional & scientific | 2015 |
| Bristol Martial Arts Academy LLP | | 2017 |
| Bristol Martial Arts Merchandise Ltd | Arts & recreation | 2024 |
| Bristol Martial Arts Training Ltd | Arts & recreation | 2024 |
| Bristol Measured Survey Limited | Professional & scientific | 2022 |
| Bristol Meat Machine Limited | Hospitality | 2016 |
| Bristol Media Group Limited | Extraterritorial | 2019 |
| Bristol Medical LP | | 2012 |
| Bristol Medical Pro Limited | Manufacturing | 2010 |
| Bristol Memorial Woodlands Limited | Other services | 1999 |
| Bristol Metropolitan Orchestra | Arts & recreation | 2010 |
| Bristol Meze Bar Limited | Wholesale & retail | 2025 |
| Bristol MG Workshop Limited | Wholesale & retail | 2014 |
| Bristol Microgreens Ltd | Agriculture & fishing | 2017 |
| Bristol Mind | Health & social care | 2000 |
| Bristol Minibus Company Limited | Transport & logistics | 2025 |
| Bristol Mobile Car Repair Ltd | Professional & scientific | 2026 |
| Bristol Mobile Patrol Limited | Administrative & support | 2018 |
| Bristol Mobiles Repair Limited | Other services | 2024 |
| Bristol Mograph Limited | Information & communication | 2017 |
| Bristol Montessori Academy Limited | Education | 2025 |
| Bristol Montessori Childcare Ltd | Health & social care | 2019 |
| Bristol Montessori Limited | Health & social care | 2019 |
| Bristol Morris Centre Ltd | Wholesale & retail | 2021 |
| Bristol MOT Centre Ltd | Wholesale & retail | 2016 |
| Bristol MOT, Service & Repair Limited | Wholesale & retail | 2026 |
| Bristol Motor Company Limited | Wholesale & retail | 2001 |
| Bristol Motor Cycle & Light Car Club Limited(The) | Arts & recreation | 1951 |
| Bristol Motor Medix Ltd | Wholesale & retail | 2024 |
| Bristol Museums Development Trust | Arts & recreation | 2008 |
| Bristol Music Trust | Education | 2011 |
| Bristol Musical Club Company Limited(The) | Arts & recreation | 1920 |
| Bristol Muslim Community C.I.C. | Health & social care | 2025 |
| Bristol Muslim Cultural Society | Arts & recreation | 2002 |
| Bristol Muzzle & Breech Loading GUN Club Limited | Arts & recreation | 1990 |
| Bristol Nail and Beauty Training School Ltd | Other services | 2018 |
| Bristol Natural History Consortium | Education | 2008 |
| Bristol Nature Telemetry Ltd | Information & communication | 2026 |
| Bristol Nectar Collective Ltd | Information & communication | 2020 |
| Bristol Neurointervention Limited | Health & social care | 2020 |
| Bristol Neurosurgery Limited | Health & social care | 2019 |
| Bristol Noodles Limited | Hospitality | 2025 |
| Bristol Nordic Walking Limited | Arts & recreation | 2018 |
| Bristol North Bookkeepers Limited | Professional & scientific | 2016 |
| Bristol North West Foodbank | Other services | 2012 |
| Bristol Notary Public Limited | Professional & scientific | 2023 |
| Bristol Notion Limited | Real estate | 2022 |
| Bristol Nursing Services Limited | Administrative & support | 2020 |
| Bristol Office Cleaning Specialists Limited | Administrative & support | 2011 |
| Bristol Office Essentials Limited | Wholesale & retail | 2005 |
| Bristol Office Machines Limited | Extraterritorial | 2006 |
| Bristol Offline Events Ltd | Arts & recreation | 2025 |
| Bristol Old VIC (Trading) Limited | Professional & scientific | 2000 |
| Bristol Old VIC and Theatre Royal Trust Limited | Arts & recreation | 1963 |
| Bristol Old VIC Film Limited | Arts & recreation | 2021 |
| Bristol Old VIC Production Company Limited | Arts & recreation | 2014 |
| Bristol Old VIC Theatre School Limited | Education | 1989 |