| Alin Petic Ltd | Manufacturing | 2019 |
| Alin U Delivery Ltd | Transport & logistics | 2017 |
| Alin U R 2020 I Ltd | Transport & logistics | 2023 |
| Alinea Holdings Limited | Financial services | 2022 |
| Alinea Property Limited | Real estate | 2022 |
| Alined Living Services Ltd | Administrative & support | 2026 |
| Alishaan Holdings Limited | Financial services | 2016 |
| Alison and Roger Taylor Limited | Real estate | 2019 |
| Alison Cooper HR Consultancy Ltd | Professional & scientific | 2015 |
| Alison Crowther Associates Limited | Professional & scientific | 2008 |
| Alison Fawcett Business Affairs Ltd | Professional & scientific | 2015 |
| Alissa Davies Consulting Ltd | Professional & scientific | 2025 |
| Alistair Canvin Ltd | Arts & recreation | 2023 |
| Alistair Roweth Limited | Education | 2017 |
| Alister J Stuart Limited | Construction | 2023 |
| Alitus Limited | Professional & scientific | 2015 |
| Alium Group Limited | Professional & scientific | 2017 |
| Alive Activities Limited | Health & social care | 2009 |
| Alive for Life Limited | Health & social care | 2025 |
| Alive Trading Limited | Arts & recreation | 2009 |
| Alivia Nails Ltd | Other services | 2023 |
| Aliziagroup Ltd | Real estate | 2026 |
| Alkana Impro LP | | 2012 |
| Alkaram Handicrafts PVT Ltd | Manufacturing | 2023 |
| Alker Assets Ltd | Financial services | 2026 |
| Alker Electrical Contracting Ltd | Construction | 2026 |
| Alker Estates Limited | Real estate | 2022 |
| Alker Investments Limited | Real estate | 2021 |
| Alkharji Ltd | Real estate | 2025 |
| Alko Mortgages Ltd | Real estate | 2014 |
| ALL Around Removals Ltd | Transport & logistics | 2025 |
| ALL Aspects Joinery SW Ltd | Manufacturing | 2022 |
| ALL Audi Ltd | Extraterritorial | 2020 |
| ALL Avon Limited | Professional & scientific | 1992 |
| ALL Business DO Limited | Other services | 2023 |
| ALL Carpet Cleaners Ltd | Administrative & support | 2026 |
| ALL Change Here Ltd | Administrative & support | 2014 |
| ALL Clear Effluent Services Ltd | Water & waste | 2022 |
| ALL Corners Telecom Ltd | Professional & scientific | 2008 |
| ALL Counties Planned Maintenance Ltd | Households | 2019 |
| ALL Davidson Limited | Financial services | 2020 |
| ALL Day Artists Ltd | Professional & scientific | 2024 |
| ALL FIX Carpentry & Build Ltd | Construction | 2023 |
| ALL Fixed Construction Ltd | Extraterritorial | 2022 |
| ALL Flex UK Limited | Professional & scientific | 2013 |
| ALL Good Things Shop Ltd | Wholesale & retail | 2025 |
| ALL Heats (Bristol) Ltd | Construction | 2019 |
| ALL in One Pro Solution Ltd | Transport & logistics | 2025 |
| ALL Just Tech Limited | Information & communication | 2024 |
| ALL Mart Bristol Ltd | Wholesale & retail | 2026 |
| ALL Occasions Floral Design Ltd | Wholesale & retail | 2022 |
| ALL OUT Impact Ltd | Professional & scientific | 2026 |
| ALL Purpose Healthcare Ltd | Health & social care | 2021 |
| ALL Rise Bristol CIC | Hospitality | 2026 |
| ALL Roofs South West Limited | Construction | 2024 |
| ALL Saints Church Lands Limited | Construction | 2024 |
| ALL Saints Court (Clifton) Management Company Limited | Households | 1968 |
| ALL Seasons Animal Rehab Limited | Professional & scientific | 2026 |
| ALL Seasons Comfort Cooling Limited | Construction | 2007 |
| ALL Sorts Maintenance Limited | Manufacturing | 2024 |
| ALL Spice Tandoori Ltd | Hospitality | 2024 |
| ALL Style Promotion/Thursday Ltd | Arts & recreation | 2025 |
| ALL Style Promotions UK Ltd | Information & communication | 2025 |
| ALL System Scaffolding Ltd | Construction | 2024 |
| ALL That Good Stuff Ltd | Information & communication | 2013 |
| ALL That IS Ltd. | Administrative & support | 2005 |
| ALL the Madmen Records Ltd | Information & communication | 2012 |
| ALL the Threes Limited | Real estate | 2019 |
| ALL Things Handy Ltd | Wholesale & retail | 2024 |
| ALL Things Marketing Ltd | Professional & scientific | 2015 |
| ALL Things Super Ltd | Wholesale & retail | 2023 |
| ALL Things Web Ltd | Information & communication | 2007 |
| ALL Things Words Ltd | Manufacturing | 2018 |
| ALL Trade Property Services Limited | Construction | 2009 |
| ALL Trades (Bristol) Limited | Wholesale & retail | 1990 |
| ALL Trades @ Specialist Contractors Ltd | Construction | 2025 |
| ALL Trades Access Ltd | Construction | 2018 |
| ALL Trades Maintenance (South West) Limited | Construction | 2016 |
| ALL Trades Property Development Limited | Construction | 2018 |
| ALL Type Property Solutions Ltd | Construction | 2021 |
| ALL Under One Ltd | Wholesale & retail | 2024 |
| ALL Vehicle Repairs & Maintenance Ltd | Wholesale & retail | 2025 |
| ALL Works Bristol Limited | Construction | 2011 |
| ALL Works Group Bristol Ltd | Construction | 2025 |
| All-Wood Joinery and Design (Bristol) Ltd | Manufacturing | 2006 |
| ALL1GEAR Tech Limited | Professional & scientific | 2024 |
| Alla Enterprises Ltd | Wholesale & retail | 2024 |
| Allan Glazing & Property Services Limited | Construction | 2020 |
| Allanmead Management Company Limited | Professional & scientific | 2001 |
| Allard Investments Limited | Financial services | 2026 |
| Allbrooks Consultancy Limited | Professional & scientific | 2008 |
| Allbuy Ltd | Wholesale & retail | 2026 |
| Allcomms Networking Limited | Information & communication | 2007 |
| Allden and Partners Limited | Professional & scientific | 2003 |
| Allegr Ltd | Information & communication | 2020 |
| Allegro Freight Forwarding Limited | Transport & logistics | 2019 |
| Allegro Group Holdings Limited | Financial services | 2019 |
| Allegro Logistics Limited | Transport & logistics | 2013 |
| Allen & Sneyd Ltd | Construction | 2025 |
| Allen & Stone Ltd | Real estate | 2014 |