| ABP Technologies Ltd | Manufacturing | 1966 |
| Absolid Limited | Health & social care | 2016 |
| Absolute ABA UK Ltd | Education | 2025 |
| Absolute BM Limited | Wholesale & retail | 2018 |
| Absolute Bodyshop Solutions Limited | Wholesale & retail | 2020 |
| Absolute Driven Limited | Extraterritorial | 2011 |
| Absolute Estate Maintenance Ltd | Administrative & support | 2026 |
| Absolutely Fabulous Cleaning Limited | Administrative & support | 2018 |
| Absolutely Fabulous Flooring Limited | Wholesale & retail | 1997 |
| Absolutely Smashing Ltd | Arts & recreation | 2023 |
| Abstract Sourcing and Trading Limited | Wholesale & retail | 2008 |
| Abstrat Limited | Information & communication | 2015 |
| ABT Industrial GAS Services Limited | Other services | 2011 |
| Abtec Services Limited | Construction | 1992 |
| Abundance Pictures Ltd | Information & communication | 2018 |
| Abundant Life Chiropractic Ltd | Health & social care | 2012 |
| ABX Fluid Fittings Ltd | Administrative & support | 2008 |
| AC Contractors (Stadt) Limited | Construction | 2015 |
| AC PC Properties Ltd | Real estate | 2021 |
| AC Sanders Limited | Wholesale & retail | 2026 |
| Acaciar Limited | Administrative & support | 2026 |
| Acanthus Ventures Limited | Real estate | 2013 |
| Access Mediation Services Limited | Professional & scientific | 2016 |
| Access Support Ltd | Information & communication | 2020 |
| Accessories Studio Ltd | Professional & scientific | 2015 |
| Acch (Hendon) Ltd | Health & social care | 2015 |
| Accident Claims Worcester Limited | Transport & logistics | 2008 |
| Accipiter Consulting Limited | Professional & scientific | 2008 |
| Acclaim Productions Ltd | Information & communication | 2012 |
| ACCOUNT4 Ltd | Professional & scientific | 2016 |
| Accountants of Worcester (AOW) Ltd | Professional & scientific | 2018 |
| Accumulator App Ltd | Arts & recreation | 2022 |
| Accuradata Ltd | Administrative & support | 2020 |
| Ace Academics Ltd | Administrative & support | 2019 |
| Ace Cars Worcester Ltd | Transport & logistics | 2024 |
| Ace Drive Limited | Transport & logistics | 2019 |
| Ace Recruitment Group Limited | Administrative & support | 2023 |
| Ace Track (U.K.) Limited | Manufacturing | 1994 |
| Acesrentalproperties Ltd | Real estate | 2024 |
| ACF Automotive Solutions Ltd | Administrative & support | 2018 |
| ACH Investments Worcester Limited | Financial services | 2022 |
| ACH Tech Services Ltd | Information & communication | 2025 |
| Achaleon Limited | Professional & scientific | 2005 |
| Aciana Limited | Hospitality | 2023 |
| Ackrowsmith Ltd | Information & communication | 2026 |
| ACL Proposal Solutions Limited | Professional & scientific | 2019 |
| ACM Demolition & Construction (UK) Ltd | Construction | 2005 |
| ACM Electrics Ltd | Wholesale & retail | 2019 |
| Acmi UK Limited | Wholesale & retail | 2001 |
| Acorn Electrics Limited | Construction | 2013 |
| Acorn Energy Ltd | Wholesale & retail | 2015 |
| Acorn Horizon Limited | Professional & scientific | 2025 |
| Acrobvt LLP | | 2022 |
| ACT Alcohol Ltd | Administrative & support | 2018 |
| ACT Electrical Contractor Ltd | Construction | 2017 |
| ACT Surfaces Limited | Construction | 2013 |
| Action Point Training & Consultancy Ltd | Professional & scientific | 2011 |
| Actionlanka (PVT) Limited | Administrative & support | 2025 |
| Active 8 + Limited | Education | 2009 |
| Active Always Community Wellbeing CIC | Other services | 2022 |
| Active Always Health and Wellbeing Ltd | Wholesale & retail | 2021 |
| Active Management and Training Limited | Administrative & support | 2009 |
| Activeroots CIC | Education | 2024 |
| Activity Co (UK) Limited | Professional & scientific | 2003 |
| Activnet Ltd | Information & communication | 2014 |
| Acton Building Services Ltd | Construction | 2020 |
| Acton Mill Care Farm Limited | Agriculture & fishing | 2009 |
| Acton Mill Support Limited | Health & social care | 2011 |
| Actuated Valve Supplies Ltd | Administrative & support | 2016 |
| Acumen Consultancy Solutions Ltd | Real estate | 2017 |
| AD Astra Aero Consulting Limited | Professional & scientific | 2018 |
| AD Consulting Limited | Administrative & support | 2020 |
| AD Hill Limited | Administrative & support | 2015 |
| AD Meliora HR Limited | Administrative & support | 2022 |
| Ad-Lib Design Partnership Limited | Arts & recreation | 2007 |
| Ad:Vantage Digital Ltd | Professional & scientific | 2013 |
| Adam & Aiden Ltd | Real estate | 2020 |
| Adam Carpets Limited | Manufacturing | 1982 |
| Adam Clements Electrical Services Limited | Construction | 2015 |
| Adam Henry Estates Ltd | Real estate | 2026 |
| Adam's Prestige Body Services Ltd | Wholesale & retail | 2019 |
| Adana Adana Ltd | Hospitality | 2024 |
| Adapt Evolve ( Global ) Ltd | Administrative & support | 2017 |
| Adapt Landscaping and Driveways Limited | Administrative & support | 2021 |
| Adastra Services Limited | Administrative & support | 2006 |
| ADC Design Limited | Professional & scientific | 2018 |
| ADC Lease Ltd | Administrative & support | 2025 |
| Adcock Developments (Worcester) Limited | Construction | 2019 |
| Added Value Enterprises Limited | Other services | 2016 |
| Addison Education Limited | Education | 2008 |
| Adelaide House Malvern Ltd | Households | 2024 |
| Adele Roche Limited | Other services | 2014 |
| Adeptus Consultancy Limited | Professional & scientific | 2025 |
| ADH Construction Group Ltd | Construction | 2016 |
| Adil Haque Ltd | Real estate | 2026 |
| Adiutor Specialist Materials Ltd | Administrative & support | 2025 |
| Adjomat Consulting Limited | Professional & scientific | 2017 |
| Adla Catering Limited | Hospitality | 2026 |
| ADM Garden Machinery Ltd | Other services | 2024 |
| Admiral Renewables Limited | Construction | 2025 |