| 021 Network Limited | Transport & logistics | 2001 |
| 1ST Call 24-7 Ltd | Construction | 2011 |
| 2020 Homes (Worcester) Limited | Real estate | 2026 |
| 36 Montagu Square Limited | Other services | 2003 |
| 360 Fabrications Limited | Manufacturing | 2016 |
| 5311 Ltd | Professional & scientific | 2025 |
| 9 Arlington Villas Management Company Limited | Hospitality | 1996 |
| 91PS Ltd | Transport & logistics | 2018 |
| A G Locks Ltd | Other services | 2025 |
| A J Coldicott Limited | Construction | 2013 |
| A Relocation Service Ltd | Extraterritorial | 2019 |
| A&P Holsten Limited | Households | 2021 |
| A.G.Redman&Son Ltd | Construction | 2014 |
| A.G.S. Publications Limited | Information & communication | 1979 |
| A2B National Roofing Limited | Construction | 2025 |
| Abbey Technology Solutions Ltd | Information & communication | 2022 |
| Academy ICT Limited | Wholesale & retail | 2015 |
| Acaster Selby Ltd | Administrative & support | 2022 |
| Acceranyers Ltd | Transport & logistics | 2021 |
| Achieve Properties Limited | Real estate | 2018 |
| Acorn Arable Holdings Ltd | Professional & scientific | 2024 |
| Acorn Arable Limited | Wholesale & retail | 1994 |
| Acorn Finance Limited | Financial services | 2000 |
| Acre Risk Consulting Limited | Professional & scientific | 2015 |
| Acumen Business Services Limited | Professional & scientific | 1997 |
| AD HSP Ltd | Financial services | 2019 |
| AD Legacy Ltd | Wholesale & retail | 2019 |
| Adamo Surveying Ltd | Professional & scientific | 2016 |
| ADG Gardens Limited | Administrative & support | 2022 |
| Advanced Estates Group Limited | Real estate | 2019 |
| Advanced Group Ventures Ltd | Financial services | 2012 |
| Advanced Hodl Technologies Ltd. | Information & communication | 2017 |
| Advanced Water Company Limited | Wholesale & retail | 2000 |
| Advantage Accreditation Limited | Education | 2009 |
| Advantage Awards Limited | Extraterritorial | 2012 |
| Advantage Sports Limited | Professional & scientific | 2026 |
| Aerobearing Services Ltd | Professional & scientific | 2021 |
| Afflete Sports Ltd | Professional & scientific | 2026 |
| Afliobgant Ltd | Hospitality | 2022 |
| AG Properties (Worcestershire) Limited | Real estate | 2020 |
| AG Reid Ltd | Administrative & support | 2022 |
| Ageofwaste Ltd | Administrative & support | 2019 |
| Agrostis Investment Management Solutions Ltd | Agriculture & fishing | 2012 |
| AH Broomfield Properties Ltd | Real estate | 2024 |
| Airsense Engineering Limited | Wholesale & retail | 1994 |
| AJ Floor Sanding & Sealing Ltd | Construction | 2017 |
| AJB Financial Advice Ltd | Professional & scientific | 2016 |
| AL HR Consulting Limited | Administrative & support | 2021 |
| Alan Cook LLP | | 2017 |
| Alan D. Verrinder Limited | Health & social care | 2003 |
| Alcester Glassware Limited | Professional & scientific | 1995 |
| Alchemy Wireless Limited | Information & communication | 2014 |
| Alchemy Yoga Studio Ltd | Other services | 2025 |
| Alcohol by Volume Limited | Wholesale & retail | 2003 |
| Alexford Limited | Professional & scientific | 2018 |
| ALL Sports Data UK Ltd | Professional & scientific | 2021 |
| ALL Trades Design Limited | Professional & scientific | 2025 |
| Allen PMW Ltd | Wholesale & retail | 2020 |
| Allens Hill Limited | Agriculture & fishing | 2004 |
| Allvalves Ltd | Administrative & support | 2019 |
| Almik Holdings Limited | Financial services | 2025 |
| Alpha 1 Canine Communication Ltd | Other services | 2004 |
| Alpina Motor Body Repairs Limited | | 1979 |
| Alternative Services LP | | 2017 |
| AMG Property Group Limited | Real estate | 2025 |
| Amiovium Ltd | Wholesale & retail | 2024 |
| Amphlett Court Limited | Real estate | 2018 |
| Andgiete Consulting Limited | Professional & scientific | 2025 |
| Andy Easter Chef Caterer Ltd | Hospitality | 2016 |
| Anglo Irish Enterprises Limited | Financial services | 2017 |
| Animals at Home (Worcestershire) Limited | Professional & scientific | 2018 |
| Anlutone Ltd | Wholesale & retail | 2022 |
| Anmeryst Ltd | Wholesale & retail | 2024 |
| Anniou Group Limited | Wholesale & retail | 2025 |
| Ansam Construction Limited | Construction | 1991 |
| Ansell & ROE Group Limited | Health & social care | 2018 |
| Ansell Studio Ltd | Professional & scientific | 2017 |
| Anthony Simon Enterprises Limited | Information & communication | 1987 |
| AOD Fitness Ltd | Arts & recreation | 2018 |
| Aorta Sales Limited | Professional & scientific | 2006 |
| Apex Activities Ltd | Hospitality | 2025 |
| Apex Audio Group Ltd | Information & communication | 2024 |
| Apex Hub Ltd | Wholesale & retail | 2025 |
| APM (Europe) Holdings Ltd | Financial services | 2020 |
| APM Fresh (UK) Limited | Wholesale & retail | 2012 |
| APT (Pershore) Limited | Construction | 2012 |
| Apted Group Ltd | Financial services | 2020 |
| Apted Holdings Limited | Financial services | 2012 |
| Aquatherm Heat Transfer Limited | Manufacturing | 2014 |
| AR Wollacott Property Ltd | Real estate | 2021 |
| Archway Brown Limited | Manufacturing | 2005 |
| Armiph Ltd | Wholesale & retail | 2024 |
| Arnie Merch UK Ltd | Professional & scientific | 2022 |
| Artform Properties Limited | Real estate | 2021 |
| Arthropodium Ltd | Transport & logistics | 2022 |
| AS Geospatial Surveys Ltd | Professional & scientific | 2024 |
| Ashley Dunne Ltd | Arts & recreation | 2012 |
| Assignment Seven Limited | Other services | 2018 |
| Asterian Studios Limited | Information & communication | 2026 |
| ATC Europe Limited | Information & communication | 2004 |