| Accident Management Service Limited | Wembley | 2009 |
| Accident Repair Centre (Park Royal) Limited | London | 1995 |
| Accident Repair Finder Limited | Waterlooville | 2008 |
| Accident Replacement Ltd | Preston | 2026 |
| Accident Solutions Scotland Limited | Glasgow | 2015 |
| Accidentpro Limited | Belfast | 2015 |
| Accity Ltd | London | 2020 |
| Acclaim Cleaning Systems Limited | Forfar | 2009 |
| Acclaim DMW Holdings Limited | Essex | 2016 |
| Acclg Limited | Tadworth | 2024 |
| Accolade FM Ltd | London | 2023 |
| Accolade Wines Pension Trustees Limited | Weybridge | 1963 |
| Accomodate (UK) Limited | West Yorkshire | 2005 |
| Accompanied Care Limited | Birmingham | 2016 |
| Accomplish Event Coaching Ltd | Burgess Hill | 2023 |
| Accomplish Fitness Retreats Limited | Hungerford | 2019 |
| Accomplish Management Limited | Stockon On Tees | 2001 |
| Accord Family Services Ltd | Morden | 2014 |
| Accord Financial Planning Limited | Bristol | 2013 |
| Accord Northern Ireland Catholic Marriage Care Service | Belfast | 2014 |
| Accordhive Ltd | Haverfordwest | 2023 |
| Account Fast Ltd | Ilford | 2019 |
| Accountability Contracts Ltd | Boston | 2024 |
| Accountability Membership Club Ltd | Watford | 2025 |
| Accountancy Quote Limited | Manchester | 2023 |
| Accountancyplus Services Limited | Doncaster | 2016 |
| Accountants Club Foundation | London | 2024 |
| Accountants Therapy Ltd | West Molesey | 2025 |
| Accountie Limited | London | 2025 |
| Accounting Road Ltd | London | 2023 |
| Accounting Services FA Limited | Guildford | 2012 |
| Accountingos Limited | London | 2026 |
| Accountinuity CIC | Gerrards Cross | 2025 |
| Accounts and Tax Experts Limited | London | 2011 |
| Accounts Outsourcing UK Ltd | London | 2014 |
| Accounts Payable Limited | Leamington Spa | 2014 |
| Accountxble Limited | Newcastle Upon Tyne | 2026 |
| Accph Ltd | Crawley | 2025 |
| Accred Services International Board Europe Ltd | London | 2019 |
| Accreditus Limited | Potters Bar | 2002 |
| Accrington Private Hire Limited | Accrington | 2004 |
| Accro Clearline Limited | Riplingham | 2018 |
| Accru Limited | London | 2023 |
| Accrual World Limited | Edinburgh | 2025 |
| Accrue Management Ltd | London | 2022 |
| Accs Total Training Limited | Waterlooville | 2018 |
| Acctv Limited | Bolton | 2020 |
| Accu Prime Accountants Limited | Reigate | 2026 |
| Accudel Ltd | London | 2020 |
| Accumise Limited | Bolton | 2023 |
| Accuracy Independent Certified Field Biologists Ltd | Newcastle Upon Tyne | 2026 |
| Accurate Businessman Limited | London | 2016 |
| Accurate Inventories Limited | Reading | 2013 |
| Accurate Laser & Skin Aesthetics Limited | Holborn | 2011 |
| Accurate Safety and Security International Ltd | London | 2013 |
| Accurate Utilities Ltd | Chester | 2007 |
| Accurate Watches Ltd | London | 2023 |
| Accurep Medical Reporting Limited | Perivale | 2012 |
| Accurex DRY Cleaners Limited | Northampton | 2017 |
| Acdb Solutions Limited | Warrington | 2018 |
| Acdc Inc Limited | London | 2019 |
| Acdl Holdings Limited | Swadlincote | 2021 |
| Ace & Thrive (Holdings) Ltd | Harrow | 2023 |
| Ace (SW) Ltd | Gloucester | 2020 |
| Ace 1 Promotions Limited | London | 2025 |
| Ace Advisory (UK) Limited | London | 2024 |
| Ace Aesthetics Skin Clinic Limited | Richmond | 2018 |
| Ace Agile Consulting Limited | Bromley | 2023 |
| Ace Agriculture Ltd | Stanmore | 2022 |
| Ace Appliance Centre Limited | London | 2002 |
| Ace Asbestos Limited | Finchley | 2006 |
| Ace Asphalt Limited | Manchester | 2002 |
| Ace Auto Electrics Limited | Manchester | 2015 |
| Ace Autolocksmith Yorkshire Ltd | Leeds | 2025 |
| Ace Barber Portsmouth Ltd | Portsmouth | 2023 |
| Ace Barber Southampton Ltd | Southampton | 2022 |
| Ace Barbers Limited | Birmingham | 2013 |
| Ace Barbershop Ltd | Manchester | 2026 |
| Ace BC Limited | Brentwood | 2015 |
| Ace Beauty & Aesthetics Ltd | Hornchurch | 2026 |
| Ace Beauty Bar Ltd | Peterborough | 2024 |
| Ace Beauty Services Ltd | London | 2025 |
| Ace Canine Hydrotherapy Ltd | Chatham | 2023 |
| Ace Carpet Cleaners Ltd | Keston | 2015 |
| Ace Cleaners Ltd | London | 2006 |
| Ace Cleaning Domestic Limited | Southampton | 2008 |
| Ace Clinic Podiatry Limited | Huddersfield | 2020 |
| Ace Coffee Ltd | Ilford | 2018 |
| Ace Commercial Laundry Limited | Huddersfield | 2018 |
| Ace Comps Group Ltd. | Aberdeen | 2021 |
| Ace Computer Systems (UK) Ltd | Newport | 2003 |
| Ace Consultancy LDN Ltd | London | 2022 |
| Ace Consultancy Ltd | Renfrew | 2024 |
| Ace Consumer Healthcare Limited | Tamworth | 2004 |
| Ace Contracts (London) Holdings Ltd | Billericay | 2024 |
| Ace Corp Limited | London | 2026 |
| Ace Cuts Ltd | Birmingham | 2020 |
| Ace Cutz Barbers Ltd | Luton | 2026 |
| Ace Day Events Limited | Kenilworth | 2006 |
| Ace Density Ltd | Northwood | 2026 |