| Alumno Student Jock’S Lodge Holdings Limited | London | 2024 |
| Alumno Student Living (Brighton) Limited | London | 2017 |
| Alumno Student Living Holdings Limited | London | 2018 |
| Alumno Student Living Limited | London | 2015 |
| Alumno Student Management Limited | London | 2018 |
| Alun Davies (Caio) Ltd | Llanwrda | 2014 |
| Alun Davies Building Contractors Ltd | Llandeilo | 2005 |
| Alun Davies Limited | London | 1999 |
| Alun Gedrych Ltd | Haywards Heath | 2005 |
| Alun Griffiths (Contractors) Limited | Abergavenny | 1980 |
| Alun Williams Construction Ltd | Carmarthen | 2003 |
| Alun-Pugh Developers Limited | London | 2013 |
| Aluna Surfacing Limited | Camberley | 2016 |
| Alunag Limited | Washington | 2014 |
| Alunia Construction Ltd | Eastbourne | 2022 |
| Aluniskou Double Glazing Ltd | London | 2015 |
| Alup Group Limited | Heathfield | 2022 |
| Aluplas Ltd | Manchester | 2023 |
| Alupului Ltd | Leighton Buzzard | 2015 |
| Aluroar Ltd | Romford | 2023 |
| Alushi Fire Protection Ltd | London | 2019 |
| Alushi Ltd | London | 2021 |
| Alushi Refurbishment Ltd | London | 2021 |
| Alutec Installations Limited | Wirral | 2008 |
| Alutech Construction Limited | Glasgow | 2024 |
| Alutech Roofing and Building Ltd | London | 2025 |
| Alutech Roofing and Renovations Ltd | London | 2024 |
| Alutect Ltd | Belfast | 2002 |
| Alutek Constructions Ltd | Braintree | 2022 |
| Aluview Ltd | Royal Victoria Docks | 2019 |
| Aluvista Systems Holdings Ltd | London | 1932 |
| Aluvita Limited | Guildford | 2023 |
| Aluwall Ltd | Telford | 2023 |
| Alux Construction Ltd | Dagenham | 2019 |
| Alux Electrical Limited | Darlington | 2021 |
| Alux Living & Daughters Ltd | Kington | 2021 |
| ALV Construction Ltd | Hornchurch | 2024 |
| ALV Contractors Ltd | Hemel Hempstead | 2026 |
| ALV Properties Ltd. | Sheffield | 2001 |
| ALV UK Services Ltd | London | 2025 |
| Alva CONSTRUCT1ON Limited | Leicester | 2021 |
| Alva Electrical Ltd | Boncath | 2024 |
| Alva Electrics Ltd | Middlesbrough | 2025 |
| Alva Kitchen & Bathroom Interior Solutions Ltd | Feltham | 2019 |
| Alva Life Ltd | Leicester | 2022 |
| Alva Trade Solutions Ltd | Glasgow | 2019 |
| Alva-Elle Construction Limited | Hornchurch | 2017 |
| Alvacourt Limited | Weston-Super-Mare | 1989 |
| Alvadac Limited | Bradford | 1998 |
| Alvaherne Limited | Redhill | 1980 |
| Alvala Construction Ltd | Romford | 2022 |
| Alvan Limited | Chepstow | 2013 |
| Alvana Ltd | London | 2021 |
| Alvanley Properties Limited | Blackpool | 2017 |
| Alvarado Interiors Limited | Wallington | 2011 |
| Alvarado Rail Limited | Lytham St.Annes | 2015 |
| Alvaston Loft Conversions Limited | Bloxwich, Walsall | 1975 |
| Alvaston Scaffolding Ltd | Belper | 2024 |
| Alvaston Site Services Ltd | Derby | 2016 |
| Alvea Living Limited | Wolverhampton | 2024 |
| Alver Contracts Limited | Gosport | 1990 |
| Alver Roofing and Construction Limited | Lee-On-The-Solent | 2024 |
| Alvera Resourcing Limited | London | 2014 |
| Alverne Construction Ltd | Poole | 2026 |
| Alveron Projects Limited | London | 2026 |
| Alverstone Loft Conversions Limited | Newport | 2004 |
| Alverz Limited | Coventry | 2018 |
| Alves & Melo Holdings Ltd | London | 2026 |
| Alves Construction Ltd | Croydon | 2021 |
| Alves DA Silva Ltd | London | 2025 |
| Alves Limited | Surrey | 2008 |
| Alves Rowe Ltd | Eastbourne | 2025 |
| Alves&Son’S Properties Limited | Surrey | 2024 |
| Alvescot Development Ltd | Bampton | 2024 |
| Alveston Estates Ltd | Stratford-Upon-Avon | 2021 |
| Alveston Homes Ltd | Stratford-Upon-Avon | 2024 |
| Alveston Promotions Ltd | Stratford-Upon-Avon | 2025 |
| Alveston Services Ltd | Birmingham | 2023 |
| Alveus Development (UK) Ltd | Manchester | 2019 |
| Alveway Limited | Lampeter | 2002 |
| Alvex Developments Ltd | Dagenham | 2026 |
| Alvi Electrical Ltd | Loughton | 2025 |
| Alvi Estate Group Construction Ltd | Guildford | 2022 |
| Alvi Services Limited | Middx | 2022 |
| Alvial Group Limited | London | 2026 |
| Alvian Financing Limited | London | 2014 |
| Alvian Ltd | Devon | 2007 |
| Alvic Construction (Northern) Limited | Harrogate | 1965 |
| Alvic Holdings Limited | Harrogate | 2023 |
| Alvic Projects Ltd | Ilkeston | 2026 |
| Alvic Sliding Wardrobes Limited | Houston | 2012 |
| Alvid Furniture Ltd | Bexleyheath | 2016 |
| Alvid Investment Company Limited(The) | Loughton | 1969 |
| Alvie Air Ltd | Airdrie | 2018 |
| Alvie Developments Limited | Livingston | 2019 |
| Alviens Ltd | Manchester | 2020 |
| Alvin AV Ltd | Godalming | 2023 |
| Alvin Builders Ltd | Dagenham | 2015 |
| Alvin Construction Ltd | Grays | 2024 |
| Alvin Electrical Ltd | Barking | 2024 |