| Jane Kershaw Properties Limited | Real estate | 1997 |
| Jaxlot Limited | Households | 1943 |
| Jaxon Developments Ltd | Construction | 2018 |
| Jaxon Heights (Torquay) Management Company Limited | Households | 2024 |
| Jaya Shiva Ltd | Hospitality | 2020 |
| Jayne Meek Counselling Ltd | Other services | 2013 |
| JB Carpentry and Building Ltd | Construction | 2023 |
| Jbcta Ltd | Education | 2021 |
| Jbticker Ltd | Wholesale & retail | 2024 |
| JCM Investments Limited | Professional & scientific | 2016 |
| JCZ Compliance Ltd | Professional & scientific | 2025 |
| JD TOV Management Ltd | Construction | 2024 |
| JDW AI Ltd | Education | 2026 |
| Jeffery Access Limited | Construction | 2013 |
| Jefferyandireland Ltd | Real estate | 2025 |
| Jerome Auto Limited | Wholesale & retail | 2017 |
| Jesla AK Property Ltd | Real estate | 2026 |
| JET Optimism Media Limited | Information & communication | 2024 |
| Jewel Communications Limited | Households | 1992 |
| JHB Hospitality Ltd | Hospitality | 2022 |
| JHR Conseil Limited | Professional & scientific | 2019 |
| JIM Skilton Children's Services Solutions Limited | Health & social care | 2012 |
| Jireh Design Limited | Extraterritorial | 2009 |
| JJ & L Developments Limited | Construction | 2011 |
| JJ Network Solutions Ltd | Construction | 2024 |
| JJB Enterprise UK Ltd | Hospitality | 2023 |
| Jjbay Developments Limited | Construction | 2016 |
| JJK Accountants Ltd | Professional & scientific | 2026 |
| JJT QS Services Limited | Professional & scientific | 2003 |
| Jj’S R & B Ltd | Administrative & support | 2022 |
| JK Smash Ltd | Wholesale & retail | 2024 |
| JK Smash Property Ltd | Real estate | 2025 |
| JK Steel Structures Ltd | Manufacturing | 2015 |
| JKM Investments Ltd | Real estate | 2016 |
| JKR Vintage Ltd | Wholesale & retail | 2020 |
| JMA Distributions Ltd | Wholesale & retail | 2026 |
| JMB News Limited | Real estate | 2012 |
| JMW Professional Services Ltd | Real estate | 2003 |
| JN Mortgages Ltd | Financial services | 2017 |
| JN Torbay Holdings Ltd | Financial services | 2025 |
| JN Torbay Ltd | Real estate | 2008 |
| JO Gough Ltd | Education | 2024 |
| JOE Shade Ltd | Health & social care | 2023 |
| Johan Minty Limited | Extraterritorial | 2025 |
| John Doble Limited | Wholesale & retail | 2003 |
| John E Brend Limited | Extraterritorial | 2009 |
| John Lake Estate Agents Limited | Real estate | 2014 |
| John Lake Gilt Edged Lettings Limited | Real estate | 2011 |
| John Stockman Window and Door Consultant Limited | Construction | 2025 |
| Joker Jigs and Lures Ltd | Wholesale & retail | 2026 |
| Jolly Running ( Devon ) Ltd | Arts & recreation | 2019 |
| Jolly Running Ltd | Arts & recreation | 2018 |
| JON Brown 100 Ltd | Transport & logistics | 2025 |
| Jonas Fishmongers Limited | Wholesale & retail | 2013 |
| Jonathan Cuming Estates Limited | Real estate | 2002 |
| Joshfrench Ltd | Wholesale & retail | 2025 |
| JP Baker (Torbay) Limited | Construction | 2017 |
| JP Tutoring Limited | Education | 2013 |
| Jpeers Limited | Hospitality | 2019 |
| JS Ayyappan UK Ltd | Wholesale & retail | 2024 |
| JS Cladding and Roofing Limited | Construction | 2014 |
| JS Energy Ventures Limited | Energy | 2025 |
| JSC Building Ltd | Construction | 2024 |
| Jsclco Limited | Financial services | 2021 |
| JSL Consulting and Associates Limited | Professional & scientific | 2008 |
| JSM Negoce Limited | Wholesale & retail | 2020 |
| JSP Civil Engineering Limited | Construction | 2025 |
| JT Developments (SW) Ltd | Real estate | 2021 |
| Jubilee Court Flat Management (Torquay) Limited | Households | 1977 |
| Juicecodistro Ltd | Wholesale & retail | 2022 |
| Juju's Enterprise Ltd | Wholesale & retail | 2026 |
| Jumping Frog Limited | Professional & scientific | 2019 |
| JUN Jaow Torquay Limited | Hospitality | 2021 |
| Juodi Studios Ltd | Extraterritorial | 2024 |
| Jury Services Limited | Information & communication | 2010 |
| Just a Little Something Ltd | Wholesale & retail | 2020 |
| Just Fit Windows Limited | Construction | 2011 |
| Justin Breyley Limited | Construction | 2019 |
| JVS Holdings Limited | Real estate | 1999 |
| JW Commercial Services Limited | Professional & scientific | 2013 |
| JWF Utilities Ltd | Construction | 2023 |
| JWJ Investments Limited | Real estate | 2000 |
| K & D Brown Limited | Construction | 2006 |
| K D Projects Limited | Professional & scientific | 2010 |
| K H Hairdressing Hair Extensions Specialist Ltd | Other services | 2019 |
| K YEO Limited | Construction | 2006 |
| K.C. Management Co. Ltd | Real estate | 1982 |
| K.I. Builders Limited | Construction | 2002 |
| K.J.E.J.K Ltd | Professional & scientific | 2016 |
| K.R.T. Productions Limited | Arts & recreation | 1980 |
| Kaerilis Limited | Wholesale & retail | 2006 |
| KAH Holdings Limited | Hospitality | 2017 |
| Kaleidoscopic Camera Ltd | Information & communication | 2010 |
| Kanana UK Limited | Health & social care | 2023 |
| Kandec Ltd | Construction | 2021 |
| Kani Trans Limited | Professional & scientific | 2016 |
| Kanick Limited | Wholesale & retail | 2024 |
| KAP S2MI Limited | Professional & scientific | 2022 |
| Karsal Manufacturing Limited | Construction | 2020 |
| Kathy's Cottages Management Ltd | Households | 2023 |