| 1 Vigo Bridge Management Limited | Households | 2021 |
| 100 Warriner Gardens Management Company Limited | Real estate | 1987 |
| 1706 Holdings Limited | Real estate | 2026 |
| 179 Harborne Limited | Real estate | 2016 |
| 1POINT23 Limited | Professional & scientific | 2024 |
| 27 West Street (Tavistock) Limited | Households | 2004 |
| 283 North Road West (PL1 5DH) Ltd | Households | 2011 |
| 32 Plymouth Road Management Company Limited | Households | 2013 |
| 3INA Cosmetics Ltd | Wholesale & retail | 2015 |
| 42 College Avenue Management Limited | Real estate | 2002 |
| 42 Emma Place Management Limited | Households | 1991 |
| 47-57 Buzzard Road RTM Company Limited | Households | 2025 |
| 4ER Solutions Ltd | Education | 2019 |
| 7 West Street Tavistock Management Limited | Administrative & support | 2003 |
| 76 Tavistock Limited | Hospitality | 2023 |
| A & M Perry Ltd | Arts & recreation | 2023 |
| A & S Hoque Ltd | Hospitality | 2010 |
| A&B High Holdings Limited | Professional & scientific | 1973 |
| A&T Cleaning Services Ltd | Administrative & support | 2021 |
| A-Teamroofing Limited | Construction | 2025 |
| AAA Autos Limited | Wholesale & retail | 2016 |
| Aatheris Travel Ltd | Administrative & support | 2016 |
| Abacus Accounting and Business Solutions Limited | Professional & scientific | 2001 |
| Abacus Collection Ltd | Administrative & support | 2025 |
| Abbey Garden Machinery Holdings Limited | Real estate | 2011 |
| ABC Simplicity Limited | Information & communication | 2016 |
| ABC TP Ltd | Manufacturing | 2020 |
| Acasta Energy Services Limited | Mining & quarrying | 2014 |
| Access Cleaning Services Limited | Administrative & support | 2020 |
| Alin Car Wash Tavi Ltd | Administrative & support | 2025 |
| Alistair Kinsey Limited | Wholesale & retail | 2011 |
| Alliancexp Limited | Professional & scientific | 2025 |
| Allied Precision Tooling Limited | Manufacturing | 2013 |
| Altus Lane Ltd | Wholesale & retail | 2026 |
| Amanda Afiya Limited | Professional & scientific | 2017 |
| Amcho Computer Services Limited | Information & communication | 1996 |
| Anabranch Ltd | Information & communication | 2012 |
| Anderton Court Management Limited | Professional & scientific | 1993 |
| Andrew & Sarah Porter Limited | Health & social care | 2019 |
| Andrew Brown Dental Limited | Health & social care | 2012 |
| Angus Financial Limited | Administrative & support | 2023 |
| Angus Mcphie (Optometrists) Limited | Health & social care | 2004 |
| Anthony Golding Limited | Professional & scientific | 2003 |
| Anthony Trueman and Co Limited | Financial services | 2006 |
| AP Mechanical Engineering Ltd | Professional & scientific | 2015 |
| Apache Partners LLP | | 2012 |
| Appartment Maintenance Limited | Real estate | 1988 |
| Art of Cake Ltd | Manufacturing | 2021 |
| Artansa CIC | Administrative & support | 2025 |
| Arthur & Henry Carr Limited | Construction | 1963 |
| Aruvi Forecourts Ltd | Wholesale & retail | 2022 |
| Assured Roofing & Construction (SW) Ltd | Construction | 2019 |
| Astute Money Financial Planning Ltd | Financial services | 2013 |
| Ataro Places Ltd | Real estate | 2018 |
| ATC Illustrations Ltd | Arts & recreation | 2023 |
| Banburys Beauty Spa Limited | Other services | 2012 |
| Bannawell Limited | Real estate | 2004 |
| Barsand House Management Company Limited | Households | 2006 |
| Base Chems Limited | Wholesale & retail | 2025 |
| Beacon Comms Limited | Information & communication | 2010 |
| Beacon Communication Services Limited | Information & communication | 2001 |
| Beacon Power Ltd | Construction | 2021 |
| Beacon Power Services Ltd | Construction | 2021 |
| Beacon Properties (UK) Ltd | Real estate | 2013 |
| Beauty on the Move Ltd | Other services | 2024 |
| Beauty Treats Limited | Wholesale & retail | 2018 |
| Beep Ltd | Information & communication | 2014 |
| Beilby Holdings Ltd | Real estate | 2022 |
| Beilby Property Ltd | Real estate | 2022 |
| Belle Leather Ltd | Manufacturing | 2022 |
| Bells Safety Systems Ltd | Construction | 2024 |
| Benica Holdings Limited | Real estate | 2020 |
| Benica Solutions Ltd | Administrative & support | 2011 |
| Bessie Records Ltd | Information & communication | 2016 |
| Best Car Wash Ltd | Administrative & support | 2018 |
| Best Pizza 4 U Ltd | Hospitality | 2024 |
| Best Pizza Limited | Hospitality | 2018 |
| Best PIZZA1 Ltd | Hospitality | 2025 |
| Bexcel Limited | Education | 2025 |
| Bicycle Repair Tavistock Ltd | Other services | 2025 |
| Big&I Limited | Information & communication | 2010 |
| Biobiz Buzz Limited | Information & communication | 2025 |
| Biotics AI Limited | Professional & scientific | 2026 |
| BKB (South West) Limited | Professional & scientific | 2020 |
| Black Star Consultancy & Services Ltd | Professional & scientific | 2026 |
| Blacksmiths Arms Ltd | Hospitality | 2023 |
| Blue Pixel Cameras Limited | Wholesale & retail | 2018 |
| BN Feast Limited | Hospitality | 2022 |
| Boutique 32 Ltd | Wholesale & retail | 2019 |
| Bradstone Flock Limited | Agriculture & fishing | 2020 |
| Braggs Garden Supplies Ltd | Wholesale & retail | 2022 |
| Breckland Lettings Limited | Real estate | 2019 |
| Brett Ellis Type Approval Limited | Professional & scientific | 2025 |
| Brewsters Limited | Wholesale & retail | 1993 |
| Bricked UP Ltd | Construction | 2025 |
| Bridge House (Okehampton) Limited | Real estate | 2016 |
| Bright Photon Ltd | Professional & scientific | 2013 |
| Britannia Yachts Ltd | Manufacturing | 2021 |
| Broadley Speaking (Sales 2000) Limited | Administrative & support | 2000 |
| Broadley Speaking Holdings Limited | Financial services | 2023 |