| Abbot Insurance Consultants Limited | Brixham | 2008 |
| Abbot Mortgage Solutions Limited | Newton Abbot | 2015 |
| Abbot Scott Ltd | Taunton | 2025 |
| Abbot Travel Holdings Limited | Loanhead | 2021 |
| Abbots 355 Limited | Reading | 2024 |
| Abbots Alliance Limited | Runcorn | 2024 |
| Abbots Care Holdings Limited | St Albans | 2021 |
| Abbots Investments Limited | Bristol | 1990 |
| Abbots Park Wealth Management Ltd | Chester | 2015 |
| Abbotsfield Investments Limited | Kenilworth | 2020 |
| Abbotsford Capital Limited | Leatherhead | 2016 |
| Abbotsford Holdings Limited | Lanark | 2024 |
| Abbotsound Investments Limited | London | 2010 |
| Abbotsound Limited | Eccles | 1996 |
| Abbotswood Group Limited | Penzance | 2024 |
| Abbott & Abbott Holdings Limited | London | 2020 |
| Abbott & Bramwell Limited | Stockport | 1994 |
| Abbott (UK) Finance Limited | Maidenhead | 2000 |
| Abbott (UK) Holdings Limited | Maidenhead | 1999 |
| Abbott Asia Holdings Limited | Maidenhead | 2001 |
| Abbott Asia Investments Limited | Maidenhead | 2005 |
| Abbott Associates Limited | Perth | 2001 |
| Abbott Australasia Holdings Limited | Maidenhead | 2012 |
| Abbott Brothers Holdings Ltd | Harlow | 2025 |
| Abbott Capital India Limited | Maidenhead | 2001 |
| Abbott Equity Holdings Unlimited | Maidenhead | 2001 |
| Abbott Healthcare Limited | Litlington | 2006 |
| Abbott Laboratories Trustee Company Limited | Maidenhead | 1952 |
| Abbott UK Subsidiary Limited | Maidenhead | 2021 |
| Abbott Vascular Devices Limited | Maidenhead | 1984 |
| Abbott's of Blackburn Ltd | Blackburn | 2023 |
| Abbotts Court Investments Limited | Hampton | 1920 |
| Abbotts Mortgages Limited | London | 2019 |
| Abboud Healthcare Ltd | Reading | 2025 |
| Abbs Investments Limited | Birmingham | 2014 |
| Abbvie UK Holdco Limited | Maidenhead | 2012 |
| Abby Lewis Consulting Ltd. | Cardiff | 2014 |
| Abby Projects Limited | Watford | 2015 |
| ABC Advisory Ltd | London | 2024 |
| ABC Advisory Services Limited | St. Albans | 2015 |
| ABC Architectural Services Limited | Chichester | 2021 |
| ABC Capital Ventures | Dalkeith | 2021 |
| ABC Co Holding Ltd | London | 2025 |
| ABC Commercial Ltd | London | 2021 |
| ABC Corporate Ltd | Royston | 2019 |
| ABC Cotswolds Limited | London | 2015 |
| ABC Deli Holdings Ltd | Newport | 2024 |
| ABC Depot Holdings Ltd | Wellham Green | 2026 |
| ABC Digital Holdings Limited | Macclesfield | 2017 |
| ABC Digital Limited | Southall | 2022 |
| ABC Enterprises Limited | Holmfirth | 2023 |
| ABC Finance Limited | Cannock | 2000 |
| ABC Financial Services (Essex) Limited | Maldon | 2006 |
| ABC Holdco II Ltd | Shirebrook | 2021 |
| ABC Holdco Ltd | Shirebrook | 2014 |
| ABC Holdings & Management Ltd | Weymouth | 2021 |
| ABC Holdings (Leic) Limited | Leicester | 2023 |
| ABC Holdings Group Limited | Farnham | 2025 |
| ABC III (Group) Limited | Edgware | 2014 |
| ABC Industry Ltd | Glasgow | 2019 |
| ABC Insure Limited | Cannock | 2024 |
| ABC International Bank PLC | | 1990 |
| ABC Investments (Hitchin) Limited | Hitchin | 2022 |
| ABC Investors Limited | Woldingham | 2016 |
| ABC Leisure Investments Ltd | London | 2020 |
| ABC MK Limited | Chester | 2016 |
| ABC Money Forex Ltd | Llanelli | 2021 |
| ABC Money Ltd | Llanelli | 2018 |
| ABC Mortgages Ltd | Sittingbourne | 2021 |
| ABC Projects (Southern) Limited | Waterlooville | 2005 |
| ABC Properties Cumbria Ltd | Carlisle | 2025 |
| ABC Property Holdings Ltd | Walsall | 2016 |
| ABC PTC Ltd | London | 2025 |
| ABC Technologies Acquisitions Limited | Oxford | 2024 |
| ABC Trading Ltd | Doncaster | 2025 |
| ABC Warranty Limited | Stockport | 2019 |
| ABC1 Holdco Limited | Cheshunt | 2017 |
| ABC2025 Limited | London | 2025 |
| Abca Bidco Limited | Newcastle Upon Tyne | 2021 |
| Abca Topco Limited | Newcastle Upon Tyne | 2021 |
| Abcabcabc 123 Limited | Brecon | 2012 |
| Abcam (US) Ltd | Cambridge | 2012 |
| Abcd Holdco Limited | Leicester | 2024 |
| Abcd Property Finance Ltd | Bristol | 2025 |
| Abcd Trading Ltd | Coleraine | 2023 |
| Abcfindit Holdings Ltd | London | 2026 |
| Abchie Holdings Ltd | Hawkinge | 2024 |
| Abchinn Holdings Limited | Manchester | 2025 |
| Abcib Islamic Asset Management Limited | | 2000 |
| Abcistic Investments Ltd | Datchet | 2018 |
| ABCM2023 Limited | Lichfield | 2023 |
| Abco Holdings (Nottingham) Limited | Nottingham | 2019 |
| Abco Holdings Ltd | Swansea | 2024 |
| Abco Insurance Services Limited | Suffolk | 2003 |
| Abco Ltd | Rochester | 2008 |
| Abcor Finance Limited | London | 2020 |
| Abcor Finance NO 2 Limited | London | 2021 |
| Abcor Finance NO3 Limited | London | 2022 |
| Abcor Finance NO4 Limited | London | 2022 |
| Abcor Finance Securities Limited | London | 2022 |