| ALL the Cats Music Publishing Limited | London | 2009 |
| ALL the Citizens Limited | Sheffield | 2020 |
| ALL the Madmen Records Ltd | Bristol | 2012 |
| ALL the People Limited | Manchester | 2024 |
| ALL the Platforms Limited | Preston | 2020 |
| ALL the Properties and ITS Software Ltd | London | 2020 |
| ALL the Rage Records Ltd | Newcastle Upon Tyne | 2026 |
| ALL the Ways Entertainment Ltd | Cardiff | 2025 |
| ALL the Web Limited | London | 2009 |
| ALL the Write Stuff Limited | Andover | 2005 |
| ALL Things Antenatal Ltd | Norwich | 2019 |
| ALL Things Audio (at Audio) Ltd | Gravesend | 2022 |
| ALL Things Beauty, Fashion & Lifestyle Ltd | London | 2020 |
| ALL Things Car Ltd | Towcester | 2024 |
| ALL Things Christian Limited | Purfleet | 2020 |
| ALL Things Cloud Limited | Shrewsbury | 2023 |
| ALL Things Considered Limited | London | 1996 |
| ALL Things Data & Systems Ltd | Northampton | 2021 |
| ALL Things Equal Limited | Bedford | 2023 |
| ALL Things Festival Limited | Polegate | 2018 |
| ALL Things Fibre Ltd | Harlow | 2021 |
| ALL Things Gassed Ltd | Northolt | 2019 |
| ALL Things Holdings Limited | Sutton Coldfield | 2025 |
| ALL Things Identity Limited | Sutton | 2023 |
| ALL Things IT Limited | Solihull | 2025 |
| ALL Things Management Limited | Northampton | 2015 |
| ALL Things Media Limited | Chatham | 2013 |
| ALL Things Mustard Ltd | Tonbridge | 2020 |
| ALL Things Online Limited | London | 2012 |
| ALL Things Portuguese Limited | Leeds | 2011 |
| ALL Things Scene Ltd | Southend-On-Sea | 2008 |
| ALL Things Socotra Ltd | Edinburgh | 2021 |
| ALL Things TEE & C Ltd | London | 2024 |
| ALL Things to ALL MEN Limited | Alton | 2011 |
| ALL Things Toasty Software Ltd | Carlisle | 2024 |
| ALL Things Web Ltd | Bristol | 2007 |
| ALL Thumbs Studios Limited | London | 2024 |
| ALL Together Music Ltd | Dartford | 2013 |
| ALL Together NOW! Ltd | Liverpool | 2004 |
| ALL Told Creative Ltd | Crediton | 2021 |
| ALL TOO Busy Solutions Limited | Hailsham | 2024 |
| ALL Toogether Ltd | Manchester | 2023 |
| ALL Tooled UP Limited | Grays | 2002 |
| ALL Town Aren'T WE Film Ltd | London | 2022 |
| ALL Trade Link Ltd | Dundee | 2025 |
| ALL Tribes Ltd | Norwich | 2024 |
| ALL Tyed UP Limited | London | 2018 |
| ALL Video Productions Ltd | Belper | 2015 |
| ALL Ways Books Ltd | Bedford | 2026 |
| ALL Ways Dance Limited | London | 2023 |
| ALL Ways Global Limited | London | 2026 |
| ALL Ways Publishing Limited | London | 2025 |
| ALL Web Services Ltd | Gloucester | 2009 |
| ALL Well-Being Limited | Croydon | 2023 |
| ALL Winner Limited | Cambridge | 2013 |
| ALL Wired UP Ltd | Luton | 2003 |
| ALL Writing Pro Ltd | Cardiff | 2025 |
| ALL Year Round Ltd | Ferndown | 2026 |
| ALL YOU Need IS Drums Ltd | Leeds | 2021 |
| ALL Your Base Ltd | Salisbury | 2021 |
| ALL Your Care Limited | Stourport-On-Severn | 2010 |
| ALL Your Comms Limited | Neston | 2014 |
| ALL Your Computers Limited | Camberley | 2009 |
| ALL Your Skills Limited | Binfield | 2014 |
| ALL Your Tomorrows Ltd | London | 2022 |
| ALL Zakatek Music Limited | Harrow | 1996 |
| All-Good Productions Ltd | London | 2022 |
| All-In Media Ltd | Tunbridge Wells | 2025 |
| All-Koms Ltd | Swindon | 2020 |
| All-Round Marketing Ltd | Didcot | 2023 |
| All-Secure Consultancy Ltd | London | 2026 |
| All-Seeing Interactive Limited | Fulwood, Preston | 2003 |
| All/Within Ltd | Bedford | 2022 |
| ALL10TIC Ltd | Poole | 2026 |
| ALL2GETHR Industries Ltd | Bridgend | 2010 |
| ALL2GETHR Ltd | Bridgend | 2009 |
| ALL3MEDIA Clip Sales Limited | London | 2022 |
| ALL3MEDIA International Limited | London | 1996 |
| ALL3MEDIA Limited | London | 2003 |
| ALL3MEDIA Rights Limited | London | 2019 |
| ALL3MEDIA USA Limited | London | 2012 |
| ALL4 Group Global Ltd | London | 2018 |
| ALL4BIRTH CIC | Burnley | 2021 |
| ALL4DAIRY Ltd | Whitchurch | 2022 |
| ALL4FEET Ltd | Whitchurch | 2016 |
| ALL4FINANCE Ltd | Horsham | 2026 |
| ALL4KIDSUK Limited | Hertfordshire | 2001 |
| ALL4ONE Media Ltd | Pontypool | 2014 |
| ALL4ONE4FUN Limited | Malpas | 2017 |
| ALL4SPORTZ Ltd | Romney Marsh | 2025 |
| Allaboutbants Ltd | Peterborough | 2020 |
| Allaboutmetrics Ltd | London | 2022 |
| Allaboutmusic Ltd | London | 2025 |
| Allabouttrends Limited | Birmingham | 2020 |
| Allad Consultancy Services Ltd | Batley | 2017 |
| Allada Consultancy Limited | Brentford | 2018 |
| Alladsof Limited | Hatfield | 2023 |
| Allagents Ltd | Glasgow | 2011 |
| Allai Tech Ltd | London | 2025 |
| Allam Trading Ltd | Maidenhead | 2026 |