| Alexis Ashot Ltd | London | 2018 |
| Alexis Cars Limited | London | 1969 |
| Alexis Colebrook Ltd | London | 2018 |
| Alexis Consultancy Ltd | Nottingham | 2013 |
| Alexis Consulting Ltd | Cardiff | 2026 |
| Alexis Finance Ltd | Bathgate | 2025 |
| Alexis Holdings Ltd | London | 2024 |
| Alexis Konsultancy Ltd | London | 2026 |
| Alexis Marketing (N.I.) Limited | Belfast | 2017 |
| Alexis Ralphs Ltd | Harrow | 2022 |
| Alexis Stenfors & Co Ltd | London | 2010 |
| Alexis Strauss PR Limited | Warfield | 2024 |
| Alexium Advisory Ltd | Tadworth | 2025 |
| Alexium Limited | Chester | 2012 |
| Alexjoe Ltd | London | 2003 |
| Alexjolliffe Ltd | London | 2022 |
| Alexknox@Ethicalelectronics Ltd | Bedford | 2021 |
| Alexktaylor Consulting Ltd | Cwmbran | 2023 |
| Alexlightpro Lighting Ltd | Birmingham | 2013 |
| Alexoria Limited | Stockport | 2007 |
| Alexs Bau-Service Ltd | Bury | 2018 |
| Alexsys Bosh Ltd | Manchester | 2010 |
| Alextania Limited | Oxford | 2001 |
| Alexus Systems Ltd | London | 2006 |
| Alexuspristine Ltd | Towcester | 2023 |
| Alexyan Limited | Barnet | 2016 |
| Alexys Schwartz Advisory Limited | London | 2025 |
| Alex’S Autos Mobile Mechanic Ltd | Okehampton | 2026 |
| Aley Consultancy Ltd | London | 2023 |
| Aley Design Consultancy Ltd | Bishop'S Stortford | 2021 |
| Aleynmoor Limited | Warrington | 2011 |
| Alez Ltd | London | 2016 |
| Alez Marketing Ltd | London | 2024 |
| ALF Accountants Limited | Birmingham | 2023 |
| ALF Accounting Limited | Waterlooville | 2008 |
| ALF Brand Name Services Limited | Rochester | 2022 |
| ALF Brown's (Transport) Limited | Dartford | 1962 |
| ALF Engineering Ltd | Glasgow | 2021 |
| ALF International Ltd | London | 2018 |
| ALF London Limited | Queen Elizabeth Olympic Park | 2024 |
| ALF Management Limited | Hull | 2026 |
| ALF Operations and CQV Consultancy Ltd | London | 2024 |
| ALF Recruit Limited | Rochdale | 2024 |
| Alf-Rhodes Limited | Rochester | 2012 |
| Alfa & Sons Ltd | Bedworth | 2025 |
| Alfa 2015 Ltd. | Winchester | 2015 |
| Alfa Asset Solutions Ltd | Upminster | 2025 |
| Alfa Associates Limited | Dunstable | 2019 |
| Alfa Automation Engineering Limited | Warrington | 2021 |
| Alfa Aviation Limited | Dursley | 1995 |
| Alfa Beta Consulting Ltd | Southampton | 2025 |
| Alfa Consulting Limited | Wolverhampton | 2009 |
| Alfa Corporate Finance Limited | Cambridge | 2023 |
| Alfa Design Group Limited | Hertford | 2016 |
| Alfa Display & Design Limited | Fordingbridge | 2002 |
| Alfa EDU Consultancy Ltd | London | 2020 |
| Alfa Energy Limited | London | 2003 |
| Alfa Engineering Services Limited | St Ives | 2016 |
| Alfa Health & Safety Consultancy Limited | London | 2020 |
| Alfa Landlord ALL Certificates Ltd T/A Alac Ltd | Ilford | 2023 |
| Alfa Leadership & Wellbeing Ltd | Ware | 2023 |
| Alfa Legal Ltd | Chelmsford | 2018 |
| Alfa Legal Services Limited | Luton | 2025 |
| Alfa M6 Group Ltd | London | 2024 |
| Alfa Marine Management Ltd | London | 2022 |
| Alfa Master Limited | Cheltenham | 2022 |
| Alfa Merlin Limited | Seascale | 2022 |
| Alfa Nero Consulting Limited | London | 2019 |
| Alfa Partners Ltd | London | 2026 |
| Alfa Safety Ltd | Chelmsford | 2019 |
| Alfa Solicitors Limited | Northwich | 2022 |
| ALFA&OMEGA3 Ltd | London | 2021 |
| Alfabe Language Services Limited | London | 2021 |
| Alfagrant Ltd | London | 2024 |
| Alfaholics Ltd | Clevedon | 1999 |
| Alfaloch Training and Coaching Ltd | London | 2025 |
| Alfan Solutions Ltd | Uttoxeter | 2020 |
| Alfaplan Ltd | London | 2025 |
| Alfapro Engineering Ltd | King'S Lynn | 2024 |
| Alfar Solutions Ltd | Bolton | 2022 |
| Alfaraff Design Ltd | Nottingham | 2019 |
| Alfares (Yorkshire) Ltd | Leeds | 2018 |
| Alfares Translation Ltd | Glasgow | 2023 |
| Alfaro Ltd | London | 2017 |
| Alfarraj Global Alliance Limited | London | 2021 |
| Alfasigma UK Limited | Cambridge | 1997 |
| Alfatronix (Holdings) Limited | Poole | 2006 |
| Alfatroves Ltd | Coulsdon | 2026 |
| Alfe Engineering Ltd | Wallsend | 2021 |
| Alfe Studio Bespoke Interiors Limited | London | 2026 |
| Alfea Ltd | Leamington Spa | 2019 |
| Alfege Advisory Limited | Cheltenham | 2017 |
| Alfege Limited | London | 2023 |
| Alfen Consultants Limited | Essex | 2005 |
| Alfen Medical Devices Development Ltd | Worthing | 2020 |
| Alfervet Neurologia Ltd | Glasgow | 2026 |
| Alffa Investments Ltd | Woodford Green | 2020 |
| Alffa Services Limited | Cardiff | 2016 |
| Alfheim Designs Limited | Leeds | 2018 |
| Alfie 007 Limited | Stonehouse | 2021 |