| Abmp Architectural Engineers Ltd | Oldham | 2021 |
| Abms Financial Ltd | Melton Constable | 2018 |
| Abms Ltd | Godalming | 2007 |
| Abmtech Ltd | Newcastle Upon Tyne | 2025 |
| ABN (Overseas) Limited | London | 1916 |
| ABN (Scotland) Limited | | 1972 |
| ABN AC Limited | Poole | 2018 |
| ABN Accountants Ltd | London | 2013 |
| ABN Accounting Limited | London | 2014 |
| ABN Associates Ltd | Harrow | 2018 |
| ABN Benefits Ltd | Milton Keynes | 2026 |
| ABN Clinic Limited | Staines-Upon-Thames | 2023 |
| ABN Consultancy (Norfolk) Ltd | North Walsham | 2016 |
| ABN Hospitality Advisory Limited | Aberdeen | 2024 |
| ABN Mackenzie Ltd | Bradford | 2022 |
| ABN Media Ltd | Plymouth | 2021 |
| ABN Partners Limited | Gerrards Cross | 2024 |
| ABN Resource Limited | Ilkley | 2012 |
| ABN Solicitors Ltd | Pinner | 2018 |
| ABN Utilities Ltd | Leicester | 2026 |
| ABN7 Architects Ltd. | Aberdeen | 2010 |
| Abna Consultancy Limited | Glasgow | 2019 |
| Abna Feed Company Limited | London | 1955 |
| Abna Limited | London | 1993 |
| Abnaxus Finance Limited | Braintree | 2015 |
| Abnd Holdings Limited | Milton Keynes | 2023 |
| Abndon Ltd | Wokingham | 2023 |
| Abne Instrumentation Ltd. | Kintore | 2008 |
| Abner Advisory Limited | Maidenhead | 2021 |
| Abney and Cove Limited | Cheadle | 2021 |
| Abney Court Limited | Bourne End | 2024 |
| Abney Hall Limited | London | 2011 |
| Abney Management Services Ltd | Aylesbury | 2012 |
| Abnick Limited | Plymouth | 2010 |
| Abno Ltd | Ponteland | 2023 |
| Abnorm Ltd | London | 2024 |
| Abnormal Domains Ltd | Glasgow | 2026 |
| Abnormal Media Ltd | Wembley | 2024 |
| Abnovo Ltd | Weybridge | 2007 |
| Abns Investments Ltd | Coalville | 2025 |
| Abnt Consultancy Ltd | London | 2018 |
| ABO Accountancy Services Limited | Aberdeen | 2012 |
| ABO Accountants Ltd | Milton Keynes | 2021 |
| ABO Energy Consulting Ltd | Cardiff | 2024 |
| ABO Partners Limited | Leicestershire | 2003 |
| Aboard Limited | London | 2025 |
| Abob Group Ltd | Birmingham | 2023 |
| Aboboe Consulting Limited | Stanway | 2014 |
| Aboca Accounting Limited | Brockenhurst | 2025 |
| Abode Block Management Limited | Crosby | 2017 |
| Abode Building (Lichfield) Limited | Lichfield | 2011 |
| Abode Building Surveyors Limited | Poulton-Le-Fylde | 2017 |
| Abode Communications Limited | Bath | 2017 |
| Abode Consulting Ltd | Newcastle-Under-Lyme | 2024 |
| Abode Content Studios Ltd | Crewe | 2024 |
| Abode Enterprise Solutions Limited | Alderley Edge | 2017 |
| Abode Heat Limited | Exeter | 2018 |
| Abode Homes (Horley) Ltd | Cardiff | 2020 |
| Abode Legal Consultancy Limited | Waterlooville | 2021 |
| Abode Marketing Limited | Beverley | 2018 |
| Abode Mortgages Limited | Storrington | 2014 |
| Abode of Ophilus Ltd | London | 2022 |
| Abode Projects Ltd | Bury St. Edmunds | 2013 |
| Abode Property Staging Ltd | Northampton | 2025 |
| Abode Swift Ltd | Manchester | 2025 |
| Abode Therapy Ltd | Horsham | 2020 |
| Aboden Architectural Services Ltd | Bristol | 2023 |
| Abodhi Design Ltd | Leeds | 2017 |
| Abodia Group Ltd | Cardiff | 2016 |
| Abodos Group Ltd | Glasgow | 2018 |
| Abodus Asset Management Limited | London | 2015 |
| Abodus Development Management Limited | London | 2015 |
| Abodus Property Management Limited | London | 2015 |
| Abof Group Limited | Ashford | 2021 |
| Abof Limited | Ashford | 2013 |
| Abogado Custodians Limited | London | 1982 |
| Abogado Limited | London | 2024 |
| Abogado Nominees Limited | London | 1982 |
| Aboh Consulting Limited | Erith | 2012 |
| Aboligo Limited | Cambridge | 2024 |
| Abologan Consulting Ltd | Strabane | 2017 |
| Abon Studio Ltd | Newbury | 2026 |
| Abonyi Ltd | Maidstone | 2026 |
| Aboo Limited | Royston | 2019 |
| Aboodi Shabi and Company Limited | Crewe | 2013 |
| Abored Limited | London | 2024 |
| Abos Promotions Ltd | Dartford | 2025 |
| Abose Engineering Ltd | Reading | 2024 |
| Abosie Architects Limited | Jedburgh | 2022 |
| Abott Structural Engineering Ltd | Bolton | 2019 |
| Aboud and Aboud Limited | London | 2015 |
| Aboud Law Ltd | Manchester | 2025 |
| Aboulton Consultancy Ltd | Exeter | 2025 |
| Abound Associates Limited | Spaxton | 2020 |
| Abound Consultancy Ltd | Tilbury | 2022 |
| Abound Design & Interpretation Ltd | Peebles | 2013 |
| Abounding Grace Limited | South Croydon | 2010 |
| Abounding Solutions Ltd | London | 2016 |
| Aboushousha Ltd | Southampton | 2023 |
| About a Boon Limited | London | 2023 |