| Amber Solar Ltd | London | 2010 |
| Amber Studio Ltd | Bromham | 2021 |
| Amber Technical Limited | Nottingham | 2002 |
| Amber Valley Limited | Rugby | 1995 |
| Amber Valley Phones Ltd | Belper | 2025 |
| Amber Valley Plant Sales Ltd | Belper | 2024 |
| Amber Valley SAW & Tool Ltd | Heanor | 2004 |
| Amber Valley Sound Works Ltd | Holbrook | 2024 |
| Amber Valley Stone Limited | Alfreton | 2019 |
| Amber Valley Wines Ltd | Alfreton | 2011 |
| Amber Works Studios Ltd | Leatherhead | 2025 |
| Amber Yorkshire Limited | Baildon | 2010 |
| Amberblue Rail Ltd | Edinburgh | 2025 |
| Amberco Ltd | Bradford | 2020 |
| Ambercraft Furnishing Limited | St. Helens | 2025 |
| Amberdale Manufacturing Limited | Southampton | 1986 |
| Ambereco Limited | Manchester | 2016 |
| Amberix Ltd | Peterborough | 2025 |
| Amberley Adhesive Labels Limited | Spalding | 2002 |
| Amberley Aromatics Limited | Guildford | 2010 |
| Amberley Doors & Windows Ltd | Stroud | 2000 |
| Amberley Group Ltd | Twickenham | 2012 |
| Amberley London Ltd | London | 2013 |
| Amberly Beauty Co., Ltd | West Midlands, England | 2025 |
| Ambermille Business Solutions Ltd | Warwickshire | 2019 |
| Amberol Limited | Corsham | 1969 |
| Amberpreet Limited | Coventry | 2025 |
| Amberset Limited | Ashford | 1996 |
| Ambertech Services Ltd | Norwich | 2024 |
| Ambertronic Limited | Newbury | 2017 |
| Amberwell Engineering Services Limited | Bridgend | 2004 |
| Amberwell Group Limited | Bridgend | 2025 |
| Amberwell Maintenance Services Limited | Pyle | 2010 |
| Amberwhite Limited | Norwich | 2002 |
| Ambery Glow Limited | Matlock | 2024 |
| Ambessa Play Limited | Norwich | 2020 |
| Ambex Limited | Hove | 1974 |
| Ambi Health Ltd | London | 2023 |
| Ambi-Rad Group Limited | Brierley Hill | 2006 |
| Ambic Equipment Limited | Witney | 1978 |
| Ambic Limited | Chester Le Street | 2001 |
| Ambic Manufacturing Limited | Bridlington | 2020 |
| Ambica Enterprise UK Ltd | Surbiton | 2026 |
| Ambience Air Conditioning Limited | Aldershot | 2024 |
| Ambience Designs International Ltd | Loughborough | 2024 |
| Ambience Home (Surrey) Ltd | Carshalton Beeches | 2012 |
| Ambient Air Solutions Ltd | London | 2024 |
| Ambient Engineering Limited | Bath | 2005 |
| Ambient Engineering Services Ltd | Preston | 2015 |
| Ambient Lighting Ltd | Liverpool | 2016 |
| Ambient Media 360 Ltd | Cambridge | 2020 |
| Ambient Pressure Diving Limited | Helston | 2000 |
| Ambiente Ltd | Stevenage | 2025 |
| Ambiente Systems Limited | Stevenage | 2021 |
| Ambientscape Community Interest Company | Harrow | 2022 |
| Ambiflow Olfactive Limited | London | 2025 |
| Ambimedia Ltd | Chesterfield | 2019 |
| Ambiotek Community Interest Company | Benfleet | 2011 |
| Ambird Systems Limited | Leicester | 2026 |
| Ambiserv Renewables Ltd | Basingstoke | 2021 |
| Ambispace Limited | Doncaster | 2016 |
| Ambit Catering (Kent) Limited | Ipswich | 2016 |
| Ambit Maintenance Ltd | Suffolk | 2006 |
| Ambit Stainless Limited | Suffolk | 2001 |
| Ambitech Associates Ltd | London | 2012 |
| Ambition FAN Technology Limited | Herne Bay | 2007 |
| Ambition&Co Ltd | London | 2025 |
| Ambitious Mischief Limited | London | 2025 |
| Ambivent Facilities Management Ltd | Industrial, Northampton | 1990 |
| Ambivo Ltd | Leeds | 2024 |
| Amble Auto Repairs Ltd | Amble | 2010 |
| Amble Boat Company Limited | Morpeth | 1995 |
| Amble Men's Shed CIC | Morpeth | 2025 |
| Amble Power Limited | Wadebridge | 2014 |
| Ambody Ltd | Nottingham | 2024 |
| Ambohoist Ltd | Chorley | 2021 |
| Ambox Ltd | London | 2022 |
| Ambra's Kitchen Limited | London | 2018 |
| Ambre Candles Ltd | Tunbridge Wells | 2024 |
| Ambre Collection Ltd | London | 2022 |
| Ambre Designs Limited | Leicester | 2017 |
| Ambre World Limited | Leicester | 2025 |
| Ambrey Shipyards Limited | Hereford | 2020 |
| Ambridge Ceramics Limited | Ripon | 2001 |
| Ambrill Holdings Limited | Burnley | 2017 |
| Ambrio Limited | Burton-On-Trent | 1996 |
| Ambrooke Steel Services Limited | Lincoln | 2009 |
| Ambrose Bakery Ltd | Woking | 2022 |
| Ambrose Carpentry Limited | Cannock | 2023 |
| Ambrose Electrical Limited | Cardiff | 2013 |
| Ambrose of London Ltd | Harrow | 2018 |
| Ambrose Wood and SON (Queen Street) Limited | Bollington | 1985 |
| Ambroselixir Ltd | Manchester | 2026 |
| Ambrosial Bakery and Store Limited | Ashton-Under-Lyne | 2025 |
| Ambrotex Limited | Somerset | 1990 |
| Ambrow Trailer Services Limited | Dorset | 2003 |
| Ambry Bakery Ltd | Lancaster | 2024 |
| Ambry Foods Limited | Norwich | 2022 |
| Ambry Ltd | Northampton | 2024 |
| Ambscents Limited | Glasgow | 2016 |