| Alkebuland Holdings Group Ltd | London | 2025 |
| Alkemy Capital Investments PLC | London | 2021 |
| Alkemy Limited | Glasgow | 2018 |
| Alken Asset Management Ltd. | London | 2014 |
| Alken Engineering Holdings Limited | High Peak | 2015 |
| Alken Systems Holdings Limited | High Peak | 2026 |
| Alkeon Limited | Bordon | 2024 |
| Alker Assets Ltd | Bristol | 2026 |
| Alker Holdings Limited | Harrogate | 2018 |
| Alkey Capital Limited | London | 2018 |
| Alkhabir Solutions Ltd | Stoke On Trent | 2017 |
| Alkioni Holdings Ltd | Barnet | 2017 |
| Alkor Capital Limited | Barnet | 2010 |
| Alkor Consulting Ltd | Walthamstow | 2020 |
| Alkr Group Limited | Hartley Wintney | 2021 |
| Alkr Holdings Limited | Hartley Wintney | 2017 |
| Alkr Investments Limited | Hartley Wintney | 2021 |
| Alkra International Ltd | London | 2017 |
| Alkron Group Limited | Blackburn | 2023 |
| Alkyl Energy Limited | Leven | 2020 |
| ALL 4 One Enterprises Ltd. | London | 2005 |
| ALL 4 One Holdings (Bromsgrove) Limited | Bromsgrove | 2019 |
| ALL a Stories Limited | London | 2021 |
| ALL About AV Group Ltd | Greenford | 2024 |
| ALL About Claims Ltd | London | 2021 |
| ALL About Flights Limited | London | 1990 |
| ALL About Investments International Ltd | London | 2025 |
| ALL About Mortgages Limited | Bourne | 2023 |
| ALL About the Trees Limited | Warrington | 2022 |
| ALL Access Security Ltd | Brighton | 2019 |
| ALL Aces Couriers Limited | Banbury | 2025 |
| ALL Altitude Group Services Limited | Guildford | 2020 |
| ALL Aspects Financial Planning Limited | Alton | 2020 |
| ALL Aspects Holdings Ltd | Wellingborough | 2020 |
| ALL Blue OX Capital Ltd | London | 2026 |
| ALL Broker Services Limited | Cheshunt | 2015 |
| ALL Business Support Solutions Group Ltd | Dawlish | 2019 |
| ALL Capital Holdings Ltd | Exeter | 2024 |
| ALL Capital Receivables Finance Ltd | Exeter | 2025 |
| ALL Car Components (Norfolk) Ltd | Swaffham | 2024 |
| ALL Cards Helpline Limited | London | 2025 |
| ALL Counties Financial Limited | Stafford | 2005 |
| ALL Cube Holdings Limited | Caterham | 2015 |
| ALL Davidson Limited | Bristol | 2020 |
| ALL Dawn Homes Ltd | Ashby-De-La-Zouch | 2013 |
| ALL Drivers INS Ltd | Wolverhampton | 2023 |
| ALL Duct Systems Holdings Limited | Oxford | 2021 |
| ALL Equipment Finance Ltd | Kenilworth | 2021 |
| ALL Facades UK (Holdings) Limited | Hinckley | 2024 |
| ALL Finance Ltd | Horsham | 2026 |
| ALL Financial Advice Ltd | Scarborough | 2012 |
| ALL Financials Ltd | Hayes | 2024 |
| ALL Food Packaging UK Limited | Potters Bar | 2015 |
| ALL Four Walls Holdings Limited | Glasgow | 2026 |
| ALL Generations Ltd | Prestwick | 2016 |
| ALL Good Holdings (2021) Limited | Belfast | 2021 |
| ALL Grand Investments Ltd | Leicester | 2018 |
| ALL Greens Holdings Limited | Canterbury | 2020 |
| ALL Greens London Limited | Canterbury | 2014 |
| ALL Holding Limited | Wolverhampton | 2019 |
| ALL Holdings Belfast Ltd | Belfast | 2025 |
| ALL Homes Holdings and Investments Ltd | Dudley | 2025 |
| ALL in a Line Ltd | Laindon | 2020 |
| ALL in Finance Ltd | Horley | 2026 |
| ALL in One Community Solutions Ltd | Nottingham | 2024 |
| ALL in One Finance & Property Ltd | Ipswich | 2025 |
| ALL in One Holdings Limited | Liverpool | 2025 |
| ALL Innovations Ltd | Gravesend | 2023 |
| ALL Insure Services Limited | Blandford Forum | 2009 |
| ALL Insured Ltd | Bournemouth | 2013 |
| ALL Kids Active Childcare Ltd | High Wycombe | 2025 |
| ALL Kinds of Blinds Limited | Hornchurch | 2017 |
| ALL Lanes Holdings Ltd | Portsmouth | 2025 |
| ALL Medical Professionals Ltd | London | 2002 |
| ALL Minds Holding Ltd | Swindon | 2021 |
| ALL Mine Investments Limited | Langley Moor | 2026 |
| ALL Money Matters Limited | Widnes | 2013 |
| ALL Mortgage Care Ltd | Billericay | 2023 |
| ALL Mortgages UK Ltd | Kilmarnock | 2024 |
| ALL Motor Leasing Limited | Telford | 2017 |
| ALL Mower Parts Holdings Ltd | Ashbourne | 2024 |
| ALL Names Taken Ltd | Glasgow | 2020 |
| ALL Nations Trading Worldwide Ltd | Clevedon | 2023 |
| ALL Night Cars Holdings Ltd. | Dartford | 2012 |
| ALL of US Holdings Limited | Wetherby | 2020 |
| ALL One Trading and Investments Ltd | Belfast | 2023 |
| ALL Pembrokeshire Group Ltd | Milford Haven | 2024 |
| ALL Pipe Holdings Ltd | Sittingbourne | 2023 |
| ALL Pozitive Ventures Limited | St Albans | 2025 |
| ALL Projects Build Ltd | Manchester | 2025 |
| ALL Projects Group Holdings Limited | Manchester | 2025 |
| ALL Property Maintenance and Construction Ltd | London | 2023 |
| ALL Property Matters Holdings Limited | Widnes | 2018 |
| ALL Purpose Holdings Limited | Leicester | 2025 |
| ALL Risk Service Ltd | London | 2020 |
| ALL Seas Capital Partners Ltd | London | 2018 |
| ALL Season Claims Limited | Stratford | 2025 |
| ALL Seasons Brokers Limited | London | 2015 |
| ALL Seasons Flowers Investments Limited | Uxbridge | 2025 |
| ALL Seasons PIR Ltd | Bromley | 2018 |