| (Un)Ordinary Limited | Manufacturing | 2020 |
| 010414 UK Limited | Information & communication | 2014 |
| 1 & 2 Clifton Terrace Management Limited | Administrative & support | 1996 |
| 1 Nelson Road Developments Limited | Construction | 2011 |
| 10 Gallon Films Limited | Information & communication | 2005 |
| 10JUMPS Limited | Professional & scientific | 2025 |
| 110 Cavendish Road Limited | Households | 2015 |
| 112 - 116 Stockbridge RD RTM Company Limited | Households | 2025 |
| 12 Cathedral View Limited | Real estate | 2020 |
| 15 Southgate Street Winchester Management Company Limited | Households | 2001 |
| 17 Westbourne Terrace Road Management Limited | Households | 2007 |
| 17-18 the AVE (Freehold) Limited | Households | 2023 |
| 17-21 Tovey Place Property Management Company Limited | Households | 2017 |
| 180 East Limited | Manufacturing | 2013 |
| 19 SS Limited | Real estate | 2021 |
| 1DME Ltd | Other services | 2017 |
| 1ST Car Credit Limited | Wholesale & retail | 2010 |
| 1TO1 Group Limited | Administrative & support | 2011 |
| 2 Gilbert Street Limited | Households | 2021 |
| 2 Market Lane Limited | Real estate | 2025 |
| 2 the Square Management Company Limited | Households | 2023 |
| 20-20 Geospatial Ltd | Professional & scientific | 2018 |
| 214 Ceramics and Bathrooms Ltd | Construction | 2023 |
| 23-24A Fleming Place MC Ltd | Households | 2024 |
| 236 Abingdon Road Limited | Real estate | 2008 |
| 240 Voltz Limited | Construction | 2011 |
| 24A High Street Management Company Limited | Real estate | 2015 |
| 24TH August Inc. Limited | Information & communication | 1998 |
| 25 Earls Terrace Limited | Administrative & support | 2020 |
| 2549 Consulting Ltd | Information & communication | 2025 |
| 2B13 Productions Ltd | Information & communication | 2020 |
| 2MARKET2MARKET Ltd | Professional & scientific | 2013 |
| 2PRECISE Limited | Construction | 2015 |
| 2SLF Ltd | Other services | 2017 |
| 3 and 4 Clifton Terrace RTM Company Limited | Households | 2024 |
| 3 Gaming Pillars Ltd | Wholesale & retail | 2024 |
| 31 Chilbolton Avenue Limited | Households | 2025 |
| 31 Main Road Hursley Management Ltd | Real estate | 2021 |
| 32 Chatsworth Road Ltd. | Households | 2002 |
| 33 Creative Studio Ltd | Arts & recreation | 2022 |
| 333 Systems Ltd | Wholesale & retail | 2025 |
| 36 North Walls Management Company Limited | Households | 2007 |
| 360 Recruitment Agency Limited | Administrative & support | 2011 |
| 3600 Integrated Marketing Solutions LLP | | 2002 |
| 37 Fortess Road RTM Company Limited | Households | 2021 |
| 37 Navarino Road Ltd | Real estate | 2026 |
| 38-44 Tower Street Winchester Limited | Households | 1999 |
| 39 Shepherds Bush Road Limited | Households | 1996 |
| 3CN Enterprises Limited | Professional & scientific | 2018 |
| 3D MTO Holdings Ltd | Wholesale & retail | 2025 |
| 3SIXTY Productions Ltd | Other services | 2013 |
| 3WBS Limited | Information & communication | 2002 |
| 42MARKETS Group Holding Limited | Financial services | 2021 |
| 43 Winslow Road Limited | Real estate | 2011 |
| 48 Balcombe Street (Freehold) Ltd | Administrative & support | 2015 |
| 483 Fulham Road Limited | Households | 1999 |
| 4TH Street Kitchen Ltd. | Hospitality | 2017 |
| 5 and 7 Hamilton Road Management Limited | Households | 2024 |
| 5 Star Office Ltd | Administrative & support | 2020 |
| 52 Barons Court Freehold Limited | Households | 2015 |
| 5678 Music Entertainment Limited | Arts & recreation | 2010 |
| 5I Medical Limited | Health & social care | 2021 |
| 6 Carlton Crescent (Freehold) Ltd | Real estate | 2025 |
| 62 Gifford Terrace Limited | Households | 2015 |
| 63 Comyn Road Limited | Real estate | 1997 |
| 64 Canon Street Limited | Real estate | 2011 |
| 66 Consultancy Limited | Professional & scientific | 2022 |
| 6BYTHREE Digital Ltd | Information & communication | 2021 |
| 6D Labs Ltd | Information & communication | 2026 |
| 7 T 7 PM Limited | Other services | 2018 |
| 7 the Soke Limited | Real estate | 2009 |
| 70 Hyde Street Management Company Limited | Real estate | 2005 |
| 71 Hyde Street Limited | Households | 2018 |
| 71 Kitto Road Management Company Ltd | Extraterritorial | 2004 |
| 71A Locomotives Limited | Transport & logistics | 1998 |
| 73 Ramsden Road Limited | Households | 1991 |
| 73/73A Albion Road Limited | Households | 2000 |
| 78 Vincent Street LLP | | 2022 |
| 78 Waterloo Road Limited | Households | 2014 |
| 7R Group Limited | Information & communication | 1998 |
| 7R Openbook Limited | Information & communication | 2010 |
| 7R Traveltech Limited | Information & communication | 2020 |
| 8 Cheriton Road Management Limited | Households | 1984 |
| 8 Upper High Street Winchester Development Ltd | Construction | 2024 |
| 80 Century Wine Ltd | Wholesale & retail | 2024 |
| 80 Westgate,Chichester Management Company Limited | Households | 1974 |
| 8484 Property Investments Ltd | Real estate | 2019 |
| 86 Reighton Road Management Limited | Households | 2022 |
| 86 ST Cross Road Limited | Real estate | 2013 |
| 8688 Cambray Limited | Households | 2019 |
| 9 Carlton Crescent Freehold Ltd | Households | 2022 |
| 9 Upper High Street Winchester Development Ltd | Construction | 2024 |
| 9 West ST Management Company Limited | Households | 2004 |
| 91011 Malmesbury Gardens Limited | Households | 2018 |
| 92 Mildmay Grove Limited | Households | 1990 |
| 98 Warriner Gardens Limited | Households | 2003 |
| A & HA Holdings Limited | Financial services | 2025 |
| A & J Estates Limited | Agriculture & fishing | 1998 |
| A & J LAY Farming Limited | Agriculture & fishing | 2015 |
| A B Trimming Ltd | Manufacturing | 2014 |