| 1 Great West Hand Car Wash Limited | Hounslow | 2019 |
| 1 High ST. Cavendish Ltd | Sudbury | 2010 |
| 1 Homecare Ltd | Preston | 2016 |
| 1 Hour Quick Alterations Ltd | London | 2022 |
| 1 Hour Recruitment Ltd | Bishops Stortford | 2021 |
| 1 Less Stress Ltd | Hayes | 2013 |
| 1 Million Tattoo Studio Ltd | Brierley Hill | 2020 |
| 1 More Haircut Limited | Leeds | 2025 |
| 1 Oak Entertainment (UK) Limited | London | 2018 |
| 1 OFF Spa Limited | Bolton | 2024 |
| 1 Palace Court Management Company Limited | Borehamwood | 2017 |
| 1 Pathfield Road Residents Association Limited | | 2003 |
| 1 Plus 4 Brothers Barbers Ltd | High Peak | 2023 |
| 1 PO Limited | Harrow | 2021 |
| 1 Pride Industrial Cleaning Limited | Liverpool | 2015 |
| 1 Repair Ltd | Glasgow | 2020 |
| 1 Ritzy Ltd | Greenford | 2014 |
| 1 Scorpio Ltd | Greenford | 2017 |
| 1 Skiin Ltd | Clacton On Sea | 2022 |
| 1 Stop Accountants Limited | Southall | 2022 |
| 1 Stop Advisory Ltd | Bristol | 2016 |
| 1 Stop Hand Car Wash Ltd | Loughborough | 2017 |
| 1 Stop Wash Limited | London | 2020 |
| 1 Tankerville Terrace Limited | Newcastle Upon Tyne | 2003 |
| 1 to One Events Ltd | Bristol | 2019 |
| 1 Touch Barber Ltd | Smethwick | 2026 |
| 1 TVS Limited | Gillingham | 2018 |
| 1 Victoria Road Brighton Limited | East Sussex | 2002 |
| 1 Wickham Road Limited | London | 2014 |
| 1 Wolseley Road Limited | London | 2009 |
| 1, Hazelmere Road Limited | | 1976 |
| 1-2-1 Doula & Breastfeeding Support Limited | London | 2015 |
| 1-2-1 Talking Therapies Ltd | Huddersfield | 2016 |
| 1-2-1 Walkies Ltd | Reading | 2015 |
| 1-4 Pevensey Close Limited | Isleworth | 1999 |
| 1-5 GP Management Limited | | 2001 |
| 1-8 Chapel Lane Management Company Ltd | Wantage | 2019 |
| 1-TO-1 Maker Limited | Birmingham | 2016 |
| 10 10 Barbers Ltd | Harlow | 2023 |
| 10 Aesthetics Ltd | Kenley | 2022 |
| 10 Banbury Road Management Company Limited | Witney | 2025 |
| 10 Blenheim Ltd | Croydon | 2013 |
| 10 Chiswick Place Management Limited | Eastbourne | 2005 |
| 10 Cotton Stores Limited | Bolsover | 2018 |
| 10 Courtland Avenue Limited | Ilford | 2014 |
| 10 Hairdressing (Hull) Ltd | Hull | 2014 |
| 10 KOO Limited | Chalfont St.Peter | 2013 |
| 10 Lindfield Gardens Management Limited | London | 1996 |
| 10 Minute Holiday Ltd | Mexborough | 2025 |
| 10 Minute Manicure Ltd | Luton | 2022 |
| 10 OUT of 10 Limited | Wembley | 2021 |
| 10 OUT of 10 Productions Ltd | Redruth | 1989 |
| 10 Portland Place Limited | Leamington Spa | 1986 |
| 10 Westcroft Square Freehold Limited | London | 2017 |
| 10 Years Younger Aesthetics Cheshire Limited | Crewe | 2025 |
| 10/10 Beauty Limited | Maidstone | 2026 |
| 100 Allies CIC | London | 2022 |
| 100 Nutrition Ltd | Birmingham | 2019 |
| 100 Power Pilates Ltd | Liverpool | 2023 |
| 100 Power Pilates Shrewsbury Ltd | London | 2026 |
| 100 Power Pilates Wrexham Ltd | London | 2026 |
| 100 Women in Finance Limited | London | 2007 |
| 100% Club Group Ltd | Stamford | 2023 |
| 100% HCW Limited | Croydon | 2007 |
| 100% Holy Spirit Ltd | London | 2012 |
| 100% OR Nothing Ltd | Houghton Le Spring | 2022 |
| 1000 Heads Salons Ltd | Cardiff | 2018 |
| 100BRIX Limited | Tynemouth | 2025 |
| 100K Freelancer Club Ltd | Wirral | 2021 |
| 100K Grooming Ltd | Bromley | 2025 |
| 100PERCENTRENEWABLEUK Ltd | Solihull | 2020 |
| 100SISI Limited | Barking | 2011 |
| 101 Bath Street Limited | Birmingham | 2017 |
| 101 Beauty Workshop Limited | Preston | 2014 |
| 101 Gunnersbury Avenue Limited | | 2005 |
| 101 King Henry's Road Limited | London | 2003 |
| 101 Mens Hair Design Limited | Halifax | 2006 |
| 101 Ride Limited | London | 2013 |
| 101 Thai Spa Limited | Bromley | 2022 |
| 101 the Beauty Studio Limited | East Yorkshire | 2005 |
| 101 Transformation Ltd | Blackpool | 2021 |
| 101 Welfare Benefits Advice Ltd | Wirral | 2023 |
| 101-103 Ling Road Freehold Company Limited | Coulsdon | 2013 |
| 1010 Aesthetics Ltd | London | 2024 |
| 1010 Solutions Limited | Milton Keynes | 2018 |
| 102 Fellows Road NW3 Limited | London | 2004 |
| 102 Nails Supply Ltd | Croydon | 2025 |
| 1020 Networking Limited | Fareham | 2024 |
| 103 the Doll House Limited | Crewe | 2024 |
| 103-105 High Street Watford 2016 Limited | London | 2016 |
| 10476703 Ltd | London | 2016 |
| 105 Dublin Road Management Company Limited | Newry | 2001 |
| 105 Holland Road Freehold Limited | London | 2004 |
| 105 INK Ltd | Birmingham | 2022 |
| 105 Logistics Ltd | Worthing | 2018 |
| 10537574 Limited | Brighton | 2016 |
| 106 Beaufort Street M.C. Limited | Saltash | 1998 |
| 106 Hair Studio Ltd | Andover | 2026 |
| 106 Salusbury Road Limited | Golders Green | 2004 |
| 1065 Limited | Glasgow | 2011 |