| Altonus Limited | Manchester | 2023 |
| Altora Ltd | Alnwick | 2025 |
| Altorex Ltd | London | 2026 |
| Altoria Global Limited | Bath | 2023 |
| Altos Commerce Ltd | London | 2021 |
| Altos Planos Collective UK Limited | St Albans | 2021 |
| Altosa Group Ltd | London | 2025 |
| Altosale Ltd | London | 2026 |
| Altosen International Tech Limited | 17 King Edwards Road, Ruislip, London | 2026 |
| Altosi Ltd | Bristol | 2008 |
| Altostuart Ltd | Croydon | 2018 |
| Altosvale Ltd | Worcester Park | 2025 |
| Altovaro Ltd | London | 2026 |
| Altovera Ltd | London | 2025 |
| Altovia Ltd | Chadwell Heath, Essex | 2025 |
| Altpar Ltd | Stanmore | 2025 |
| Altr Studio Ltd | London | 2025 |
| Altra Group Limited | Rayleigh | 2025 |
| Altra Living Ltd | London | 2019 |
| Altra Ltd | Kington | 2025 |
| Altra Trade Frames Limited | Caernarfon | 2022 |
| Altra Trading Ltd | Bracknell | 2025 |
| Altrad International Ltd | Harrow | 2008 |
| Altradexo Ltd | Glasgow Central | 2026 |
| Altrag Limited | Stanford-Le-Hope | 2021 |
| Altrain Athletic Ltd | London | 2023 |
| Altrans Inc Ltd | Wellingborough | 2010 |
| Altravana Ltd | Newry | 2022 |
| Altravision Security Systems Limited | Chesterfield | 2016 |
| Altrego Ltd | Milton Keynes | 2018 |
| Altrex Wholesale Ltd | Peacehaven | 2026 |
| Altrglo Ltd | Manchester | 2024 |
| Altria Ventures UK Ltd | London | 2024 |
| Altrin Systems Technology Ltd | Bristol | 2022 |
| Altrincham Autos Limited | Altrincham | 2017 |
| Altrincham Autotecnic Centre Limited | Altrincham | 1994 |
| Altrincham Car Sales Limited | Cheadle | 2024 |
| Altrincham Fencing Limited | Malpas | 2021 |
| Altrincham Floor Studio Limited | Altrincham | 2017 |
| Altrincham IT Services Ltd | Sale | 2005 |
| Altrincham MOT Centre Limited | Sale | 2018 |
| Altrincham Plumbing Supplies Limited | Sale | 2002 |
| Altrincham Specsavers Limited | Fareham | 1993 |
| Altrincham Tyre & Exhausts Limited | Cheshire | 1977 |
| Altrincham Visionplus Limited | Fareham | 1993 |
| Altrion Labs Limited | Birmingham | 2026 |
| Altrix Brands Ltd | Leeds | 2026 |
| Altrix Global Ltd | London | 2024 |
| Altrix Health and Fitness Supplements (UK) Ltd. | Pentre | 2026 |
| Altrix Services Limited | Birmingham | 2025 |
| Altrlife Ltd | Burnley | 2022 |
| Altro Drinks Ltd | Grimsby | 2024 |
| Altro Metals Ltd. | Bridgend | 1993 |
| Altrone Ltd | London | 2015 |
| Altronix Ltd | London | 2026 |
| Altronn Shipping PTE Ltd | Cardiff | 2025 |
| Altrscents Limited | Warrington | 2025 |
| Altruar Limited | Bury St. Edmunds | 2018 |
| Altrucom Limited | Thatcham | 1998 |
| Altruist Brands Ltd | Glasgow | 2021 |
| Altruistic Solutions Ltd | Huddersfield | 2021 |
| Altryn Sportswear Ltd | Manchester | 2022 |
| Altrys Arts Limited | Bradford | 2025 |
| Altstart Ltd | Leeds | 2020 |
| Alttrade Distribution Ltd | London | 2025 |
| Alttrade International Ltd | London | 2026 |
| Alttrade Limited | London | 2024 |
| Altu Living Limited | Ely | 2025 |
| Altum Naturals Ltd | London | 2025 |
| Altum Refuel Limited | London | 2025 |
| Altum Trading Ltd | Huddersfield | 2021 |
| Altum Valorem Limited | Weybridge | 2020 |
| Altumoor Ltd | Blackburn | 2023 |
| Altun Automotive Limited | Southend-On-Sea | 2025 |
| Altun Chauffeur Ltd | London | 2025 |
| Altun Food & Wine Limited | London | 2026 |
| Altun Group 2 Limited | London | 2023 |
| Altun Group Limited | London | 2025 |
| Altun Retail Limited | London | 2017 |
| Altun SAA Ltd | Liverpool | 2025 |
| Altun Tower Supermarket Ltd | Smethwick | 2025 |
| Altund Ltd | London | 2022 |
| Altunel Creative Services Limited | London | 2021 |
| Altunhost Ltd | London | 2026 |
| Altuntas Yachting Ltd | London | 2026 |
| Altur Ltd | Northolt | 2025 |
| Altura Apparel Ltd | Manchester | 2025 |
| Altura Brands Ltd | Richmond | 2025 |
| Altura Capital Limited | London | 2011 |
| Altura Climbing Limited | Manchester | 2026 |
| Altura Commerce Ltd | Mildenhall | 2026 |
| Altura Dairies Ltd | London | 2025 |
| Altura Digital Ltd | London | 2025 |
| Altura Enterprises Ltd | London | 2025 |
| Altura Group Ltd | London | 2021 |
| Altura Labs Ltd | London | 2025 |
| Altura Media Ltd | London | 2025 |
| Altura Service Limited | Northampton | 2016 |
| Altura Trade Lines Ltd | Liverpool | 2025 |
| Alturaa UK Ltd | London | 2025 |