| Arnd Technologies Ltd | Southampton | 2026 |
| Arne Electrical Services Ltd | Glasgow | 2022 |
| Arne Fabrications Limited | Grimsby | 2011 |
| Arne Trade Company Limited | West Midlands | 2023 |
| Arneg UK Limited | Sandy | 1990 |
| Arnek Cooling Ltd | Farnborough | 2022 |
| Arnica Recovery Ltd | Grays | 2020 |
| Arno Bearing Int'L Limited | Kington | 2025 |
| Arno GB Limited | Bristol | 1978 |
| Arnold & Arnold Co. Limited | Dunmow | 1982 |
| Arnold and Graham Jewellers Ltd | Sheffield | 2020 |
| Arnold Bakery CIC | Glasgow | 2024 |
| Arnold Boat Yachts Marine Ltd | Cambridge | 2024 |
| Arnold Brothers Contracting Limited | Ramsgate | 2017 |
| Arnold Building Services Limited | Dursley | 1988 |
| Arnold Engineering Plastics Limited | Northampton | 1972 |
| Arnold Hughes Limited | Tamworth | 2021 |
| Arnold Industrial Engineering Limited | Hereford | 2010 |
| Arnold Lift Trucks Limited | Nottingham | 2017 |
| Arnold Magnetic Technologies Limited | Sheffield | 2000 |
| Arnold Murati Technical Services Ltd | Rotherham | 2021 |
| Arnold On-Site Services Limited | Pontefract | 2020 |
| Arnold Powered Access Ltd | Waterlooville | 2020 |
| Arnold Sign and Graphics Limited | Northampton | 1999 |
| Arnold Wills and Company Limited | Oakham | 1946 |
| Arnold Wragg Limited | Sheffield | 2004 |
| Arnoldlifters Ltd | Goole | 2016 |
| Arnolds Confectioners Ltd | Sheffield | 2012 |
| Arnolds Quick Dried Foods Limited | Sleaford | 1976 |
| Arnos Studios Ltd | Southall | 2025 |
| Arnott Conveyors Limited | Northampton | 1995 |
| Arnott Group Limited | Brixworth | 1976 |
| Arnott Handling Equipment Limited | Northampton | 2004 |
| Arnott Holdings Ltd | Towcester | 2021 |
| Arnway Limited | St. Helens | 1973 |
| ARO Carcare Ltd | Middlesbrough | 2018 |
| ARO Heli Services Ltd | Bedford | 2024 |
| ARO Ingersoll Rand Limited | Beckenham | 2026 |
| ARO Labs Ltd | Bristol | 2025 |
| ARO Marble Limited | London | 2006 |
| ARO Packaging Scotland Limited | Edinburgh | 1991 |
| ARO Resources Limited | Glasgow | 2020 |
| ARO Scientific Ltd | Widnes | 2021 |
| ARO Scrubwear Ltd | London | 2026 |
| Aroara Ltd | London | 2024 |
| Arobosta Limited | Manchester | 2024 |
| Aroc Media Limited | Southampton | 2014 |
| Arofar Ltd | Newcastle Upon Tyne | 2023 |
| Arofleur Skincare Ltd | London | 2026 |
| Arolco (Ireland) Limited | Castlederg | 1992 |
| Aroma Alchemy Vending Ltd | Harlow | 2025 |
| Aroma at the Olde Mill Limited | Lisburn | 2021 |
| Aroma Caterers Ltd | London | 2022 |
| Aroma Chimie Ltd | London | 2018 |
| Aroma Fragrances Ltd | Gravesend | 2025 |
| Aroma Galleria Ltd | Morden | 2024 |
| Aroma Hearts Ltd | London | 2024 |
| Aroma Holiday Ltd | Sheffield | 2014 |
| Aroma Icecream Limited | Hornchurch | 1999 |
| Aroma LAB Coffee Ltd | London | 2025 |
| Aroma LAB Ltd | Leicester | 2023 |
| Aroma ME Scent Ltd | London | 2025 |
| Aroma Mill Ltd | Reading | 2020 |
| Aroma N Ltd | London | 2022 |
| Aroma Rocks Ltd | Birmingham | 2019 |
| Aroma Sanctuary Edinburgh Ltd | Edinburgh | 2016 |
| Aroma Sphere Limited | Birmingham | 2026 |
| Aroma Theory Ltd | Rochester | 2021 |
| Aroma Trading Limited | Aylesbury | 1992 |
| Aroma WAX Melt Ltd | Wisbech | 2026 |
| Aroma World Limited | Rotherham | 2009 |
| Aroma&Love Limited | Waltham Cross | 2025 |
| Aroma-Health & Therapies Ltd | Wirral | 2020 |
| Aroma-Zone UK Ltd | London | 2025 |
| Aromabar (Scotland) Ltd | Barrhead | 2017 |
| Aromacee Ltd | London | 2022 |
| Aromacore Limited | Ruislip, | 2025 |
| Aromada Limited | Cardiff | 2019 |
| Aromafiore Ltd | London | 2023 |
| Aromafolia Ltd | Glannau Dyfrdwy | 2026 |
| Aromaherb Limited | Braintree | 1996 |
| Aromair Limited | Middlesex | 1999 |
| Aromaria UK Ltd | London | 2023 |
| Aromasoul Limited | Doncaster | 2024 |
| Aromastaples Ltd | London | 2023 |
| Aromatherame Limited | Glasgow Central | 2025 |
| Aromatherapet Ltd | Sudbury | 2025 |
| Aromatherapy Expert Ltd | London | 2026 |
| Aromatic Answers Ltd | Ipswich | 2018 |
| Aromatic Bouquets Ltd | Deeside | 2025 |
| Aromatic Coffee Roasters Ltd | Barnet | 2025 |
| Aromatic Flavours & Fragrances Europe Limited | Bury St Edmunds | 1987 |
| AROMATIC89 Ltd | West Midlands | 2025 |
| Aromatica Foods Limited | Birmingham | 2026 |
| Aromatics of the Hebrides Ltd | Isle Of Islay | 2019 |
| Aromco Limited | Suffolk | 1985 |
| Arome Atelier Ltd | Edgware | 2025 |
| Arome Saviour Ltd | Leicester | 2023 |
| Aromesse Limited | Gainsborough | 2002 |
| Aromi Investments Ltd | Tetbury | 2019 |