| BOB Fram Ltd | Professional & scientific | 2020 |
| Boddy Studios Limited | Information & communication | 2022 |
| Body Tonic Devizes Ltd | Other services | 2011 |
| Bolwig Limited | Administrative & support | 2023 |
| Bonnie Locket Ltd | Arts & recreation | 2022 |
| Bookkeeping Buddies Ltd | Professional & scientific | 2000 |
| Botanico Bars Limited | Hospitality | 2018 |
| Boundary Fencing Limited | Construction | 2016 |
| Bourne Furniture Limited | Wholesale & retail | 2002 |
| Bowes Wine Ltd. | Wholesale & retail | 2002 |
| Bowline Communications Ltd | Professional & scientific | 2014 |
| Box Inn Limited | Hospitality | 2004 |
| BPW Electrical Services Ltd | Construction | 2018 |
| Brackstone Building Contractors Limited | Construction | 1986 |
| Brandwealthclub Ltd | Education | 2024 |
| Brass Hats Personnel Ltd | Administrative & support | 2008 |
| Brickham House Limited | Professional & scientific | 2016 |
| Brittany Ltd | Manufacturing | 2022 |
| Brittox News Limited | Wholesale & retail | 2026 |
| Brookfields Management (NO.1) Limited | Households | 1990 |
| Brookson (5152I) Limited | Administrative & support | 2007 |
| Browfort Survey and Valuation Limited | Professional & scientific | 2014 |
| Build Repair Restore Limited | Construction | 2009 |
| Burry Fire Protection Ltd | Construction | 2025 |
| Bursary Administration Limited | Financial services | 2008 |
| Business Management Support Limited | Professional & scientific | 2022 |
| Butfield Limited | Professional & scientific | 2003 |
| Buzzvestor Media Limited | Information & communication | 2019 |
| Bygone Window Cleaning Ltd | Administrative & support | 2018 |
| C & S Plumbing & Heating Services Limited | Construction | 2015 |
| C E Bricklaying and Construction Ltd | Construction | 2024 |
| C N Palmer Limited | Construction | 2023 |
| C S M (Devizes) Limited | Construction | 2009 |
| C&S Foods Limited | Hospitality | 2026 |
| C.R. & J.R.Consultancy Limited | Professional & scientific | 2015 |
| C.S. Winchcombe Funerals Limited | Other services | 2003 |
| CA Hospitality Ltd | Hospitality | 2019 |
| Ca'Pietra Group Limited | Construction | 2011 |
| Cabin Living Limited | Construction | 2014 |
| Caenhill Countryside Centre Limited | Education | 2013 |
| CAH Developments Limited | Real estate | 2023 |
| Calloway Consulting Limited | Professional & scientific | 2009 |
| CAM Properties (Hayle) Limited | Real estate | 1997 |
| Cambridge Cyber Centre Ltd | Education | 2023 |
| Camps & Clinics (Equine) Ltd | Education | 2024 |
| Cane Communications Ltd | Professional & scientific | 2023 |
| Cannings Cross Farms Limited | Agriculture & fishing | 1989 |
| Cannings Hill Garage Limited | Construction | 1957 |
| Capital Stories Ltd. | Manufacturing | 2024 |
| Car and Commercial Servicing Limited | Wholesale & retail | 2002 |
| Cardwave Services Limited | Professional & scientific | 2004 |
| Caritate Limited | Health & social care | 2006 |
| Carriage Court (Devizes) Management Company Limited | Real estate | 2006 |
| Carter Pumps Limited | Wholesale & retail | 2000 |
| Casco Holdings Limited | Real estate | 2018 |
| Caulfields Residential Sales Ltd | Real estate | 2018 |
| Caveat Venditor Ltd | Professional & scientific | 2011 |
| Ccbristol Ltd | Other services | 2023 |
| Centreline Access Solutions Ltd | Construction | 2011 |
| Centrix Properties Limited | Real estate | 1996 |
| Century 2 Ltd | Wholesale & retail | 2017 |
| Ceramic Specialists Limited | Construction | 1987 |
| Cexm Ltd | Manufacturing | 2009 |
| CH Barker Ltd | Administrative & support | 2019 |
| Chadd Properties Ltd | Real estate | 2014 |
| Chainhome Limited | Households | 1983 |
| Chalk Architects Ltd | Professional & scientific | 2022 |
| Chalk Downs Motor Co. Ltd. | Wholesale & retail | 2024 |
| Chandlers Catering Ltd | Hospitality | 2021 |
| Charles S. Winchcombe and SON (Marlborough) Limited | Other services | 2011 |
| Charlotte Stanwell Ltd | Administrative & support | 2015 |
| Charlton Baker (Audit) Limited | Professional & scientific | 2026 |
| Charlton Baker (Bristol) Limited | Professional & scientific | 2006 |
| Charlton Baker (Media and Entertainment) Limited | Professional & scientific | 2006 |
| Charlton Baker (Melksham) Limited | Professional & scientific | 2006 |
| Charlton Baker Limited | Professional & scientific | 2010 |
| CHC Regeneration Ltd | Professional & scientific | 2025 |
| Checkpoint Tyre & Auto (Devizes) Limited | Wholesale & retail | 2019 |
| Cheltenham Bookkeepers Ltd | Professional & scientific | 2013 |
| Cheverell Medical Limited | Health & social care | 2026 |
| Children's Tutoring & Learning Services Ltd | Education | 2025 |
| Children's Tutoring Service Ltd | Education | 2025 |
| Chippyosaurus Limited | Construction | 2025 |
| Chirton Building Co Ltd | Construction | 2018 |
| Chirton Country Store Limited | Households | 1984 |
| Chirton Management Company Limited | Professional & scientific | 2008 |
| Chivers Stove Centre Limited | Wholesale & retail | 2011 |
| Chloe's Cobs Ltd | Agriculture & fishing | 2024 |
| Chowdhury Catering Devizes Ltd | Hospitality | 2025 |
| Chris King Roofing Limited | Construction | 2013 |
| Chris Sterling Enterprises Limited | Wholesale & retail | 1984 |
| Chris Watts Limited | Wholesale & retail | 2013 |
| Chris Worthy Ltd | Manufacturing | 2019 |
| Christelle Limited | Other services | 2006 |
| Christopher Jack Orthopaedics Limited | Real estate | 2014 |
| Cilicia Limited | Professional & scientific | 2017 |
| Circle Accountancy Services Ltd | Professional & scientific | 2018 |
| Circle Management Group LLP | | 2016 |
| Circle TPS Ltd | Real estate | 2017 |
| Circuit Electrical Limited | Construction | 2014 |