| 23 Ears Limited | Arts & recreation | 2006 |
| 4 Square Advice Limited | Financial services | 2001 |
| 56.56 North Ltd | Professional & scientific | 2023 |
| 6IXTY 5IVE Productions Ltd | Manufacturing | 2024 |
| A and J (GB) Ltd | Wholesale & retail | 2013 |
| A B Electrical Pewsey Limited | Construction | 2014 |
| A N Information Limited | Professional & scientific | 2011 |
| A. G. Builders Limited | Construction | 1992 |
| ABB Pewsey Limited | Financial services | 2026 |
| ABP Management Services Limited | Financial services | 2022 |
| Acorn (Pewsey) Agricultural Contracting Limited | Agriculture & fishing | 2022 |
| Acorn Builders (Pewsey) Limited | Construction | 1999 |
| Adept Groundworks Limited | Construction | 2017 |
| Advent Motorsport Limited | Arts & recreation | 1995 |
| Aegaeon Technical Limited | Professional & scientific | 2011 |
| African Mountain Research Foundation | Professional & scientific | 2020 |
| Agricultural Water Engineers Limited | Construction | 2011 |
| Aker Fire and Security Limited | Manufacturing | 2016 |
| Alan Gumbrell Thatching Ltd | Construction | 2011 |
| Alderbrook (Wiltshire) Limited | Real estate | 2021 |
| Alex Bramall Ltd | Professional & scientific | 2013 |
| Amma's Thali Limited | Hospitality | 2025 |
| Andooi Design Limited | Professional & scientific | 2009 |
| Annika Carroll Ltd | Professional & scientific | 2013 |
| Anytime Office Limited | Information & communication | 2007 |
| Apkm Accountancy Ltd | Professional & scientific | 2015 |
| Apogee Industries Limited | Manufacturing | 2007 |
| Apogee Infrastructure Ltd | Real estate | 2019 |
| Aray Jewellery Ltd | Wholesale & retail | 2015 |
| Arbor Bespoke Cabinet Makers Ltd | Manufacturing | 2013 |
| Ardern Ltd | Professional & scientific | 2000 |
| Arlington Packaging (Rental) Limited | Administrative & support | 2004 |
| Aros Corporation Limited | Information & communication | 2011 |
| Arrow Fencing Ltd | Agriculture & fishing | 2023 |
| ARTIKUL8 Ltd | Information & communication | 2019 |
| Artysan Limited | Wholesale & retail | 2019 |
| ARX Holdings Limited | Professional & scientific | 2016 |
| AS Comics Limited | Information & communication | 2017 |
| ASM One Limited | Information & communication | 2015 |
| Atlantic Screen Composers Limited | Arts & recreation | 2010 |
| Atlantic Screen International Limited | Information & communication | 2011 |
| Atlantic Screen Media Limited | Information & communication | 2017 |
| Atlantic Screen Music Limited | Information & communication | 2017 |
| Atlantic Screen Scores Ltd | Information & communication | 2013 |
| Atps (London) Limited | Real estate | 2010 |
| Avilo Limited | Professional & scientific | 2026 |
| Balmain Consulting Limited | Professional & scientific | 2021 |
| Bandalf Consulting Limited | Professional & scientific | 2025 |
| Barneby Gates Limited | Wholesale & retail | 2013 |
| Barsmore Farm LLP | | 2020 |
| Battleground Fitness UK Limited | Arts & recreation | 2013 |
| BEN Phillips Photography Limited | Professional & scientific | 2013 |
| Benton Jones Associates Limited | Professional & scientific | 2015 |
| Berry Hall (Investments) Limited | | 1957 |
| Bitethelight Limited | Information & communication | 2017 |
| Blandfords International Ltd | Wholesale & retail | 2019 |
| Blue Shore Investments Ltd | Real estate | 2002 |
| Boushka Limited | Manufacturing | 1997 |
| Box Plus One Ltd | Professional & scientific | 2022 |
| Bradbourne Interiors Limited | Professional & scientific | 2025 |
| Bread and Honey Limited | Arts & recreation | 2012 |
| Brick House Netsec Consulting Limited | Information & communication | 2013 |
| Brimstone Systems Limited | Information & communication | 2026 |
| British Forces Foundation | Health & social care | 1999 |
| Brodie Facilities Management Ltd | Administrative & support | 2018 |
| Brook and Lewis Tree Surgeons Ltd | Administrative & support | 2021 |
| Business Vision Consulting Limited | Professional & scientific | 2020 |
| C.W. Nash (Farms) Limited | Administrative & support | 1977 |
| Camilla Hampton Interiors Ltd | Professional & scientific | 2020 |
| Campos Freire Limited | Real estate | 2025 |
| Canonhall Investments Ltd | Construction | 2014 |
| Chalk River Ltd | Professional & scientific | 2025 |
| Champion Events Ltd | Administrative & support | 2011 |
| Chapters Freefolk Ltd | Real estate | 2010 |
| Chapters Property Development and Investment Limited | Professional & scientific | 1999 |
| Chapters Property London Limited | Real estate | 2013 |
| Charwill (Wiltshire) Ltd | Real estate | 2024 |
| Cheeky Chappy Ltd | Information & communication | 2018 |
| Chisenbury Court Management Company Limited | Households | 1983 |
| Chris Coles Master Thatcher Limited | Construction | 2016 |
| Clarity Event Consulting Ltd | Professional & scientific | 2022 |
| Clarity Events Ltd | Administrative & support | 2025 |
| Clean Restore Ltd | Construction | 2017 |
| Cleaning Angels Residential Ltd | Administrative & support | 2022 |
| Clouds Unfold Ltd | Professional & scientific | 2021 |
| Cool Momentum LLP | | 2009 |
| Copyright Administration Services Limited | Arts & recreation | 2008 |
| Coxons Ltd | Information & communication | 2016 |
| Create More Value [CMV] Ltd | Information & communication | 2025 |
| Crighton Sturgess Investments Ltd | Real estate | 2007 |
| Cruice Goodall Architecture & Design Ltd | Professional & scientific | 2014 |
| D.L. Instrument Services Limited | Other services | 1998 |
| DA Rosa Properties Ltd | Real estate | 2020 |
| Dahu Limited | Information & communication | 2011 |
| DAN Henderson Ltd | Information & communication | 2011 |
| Danbar Drilling Services Limited | Construction | 2000 |
| Data Centre Alliance Ltd. | Other services | 2011 |
| David Baxter Environmental Ltd | Professional & scientific | 2023 |
| Dayman Foods Ltd | Hospitality | 2023 |
| DCS Data Limited | Information & communication | 2000 |