| 23 Swanleys Ltd | London | 2017 |
| 23 TEN Engineering Ltd | Lytham St.Annes | 2024 |
| 23 Twentynine Ltd | London | 2022 |
| 23 Wealth Advisory Limited | London | 2025 |
| 23 Westcroft Square (Management Company) Limited | London | 2002 |
| 23 Wise Words Limited | London | 2021 |
| 23 World Limited | London | 2003 |
| 23.5 Degrees Topco Limited | London | 2014 |
| 230 Evering Road Management Company Limited | London | 1994 |
| 2306 Limited | Londonderry | 2025 |
| 231 Addiscombe Road Management Company Limited | Croydon | 1999 |
| 2311 Limited | Motherwell | 2021 |
| 2313 Consultancy Ltd | Gravesend | 2026 |
| 232 Collective Ltd | London | 2026 |
| 232 North Street Management Limited | Bristol | 2002 |
| 232 Studios Limited | Grimsby | 2010 |
| 2322MH Engineering Limited | Askam-In-Furness | 2013 |
| 233 Edin Limited | Bo'Ness | 2008 |
| 234567 Ltd | London | 2018 |
| 234VENTURES Ltd | Birmingham | 2015 |
| 235 Kingston Road Limited | Teddington | 2011 |
| 236 Works Limited | Leighton Buzzard | 2022 |
| 237 Lincoln Road (Peterborough) Management Company Ltd | Hop Pole | 2022 |
| 238 Management Services Limited | Sheffield | 2004 |
| 23:21 Consultancy Limited | London | 2025 |
| 23:23 Consulting Ltd | London | 2025 |
| 23C Ltd | Stone | 2024 |
| 23LBE Limited | Kington | 2025 |
| 23M Business Limited | Chester | 2023 |
| 23MILE Capital Ltd | London | 2025 |
| 23MM Limited | Hamilton | 2018 |
| 23NERGY Ltd | London | 2017 |
| 23NS Consulting Limited | Ruislip | 2025 |
| 23NS Limited | Ruislip | 2020 |
| 23RD Club Marketing Ltd | Wembley | 2023 |
| 23RD Consulting Limited | Milton Keynes | 2025 |
| 23RD Group Ltd | Wallington | 2024 |
| 23RD Street Consulting Ltd | Maidenhead | 2023 |
| 23RED Limited | London | 2000 |
| 24 7 Living UK Consulting Limited | Romsey, | 2016 |
| 24 & More Ltd | Egham | 2024 |
| 24 7 Living UK Limited | Romsey | 2016 |
| 24 Acoustics Limited | Southampton | 2004 |
| 24 Beacon Ltd | Motherwell | 2017 |
| 24 Capital Limited | Berwick-Upon-Tweed | 2009 |
| 24 Crewdson Road SW9 Limited | Croydon | 2002 |
| 24 Design and Planning Ltd | Taunton | 2026 |
| 24 Devonshire Road (Bristol) Limited | Bristol | 1997 |
| 24 Elite Sports Management Ltd | London | 2025 |
| 24 Elms Avenue Limited | London | 2006 |
| 24 Food Control Ltd | London | 2016 |
| 24 Hour Open Studio Limited | Tewkesbury | 1990 |
| 24 Hours Auto Windshield Ltd | London | 2018 |
| 24 Hours Critical Care Limited | Harlow | 2012 |
| 24 Howitt Road Residents Association Limited | | 1981 |
| 24 HR Surveys Limited | Birmingham | 2021 |
| 24 Interior Designs Ltd | London | 2026 |
| 24 L&A Ltd | Hampton | 2015 |
| 24 Nzou Consulting Ltd | London | 2025 |
| 24 Ramsden Road Limited | London | 1998 |
| 24 Russell Street, Reading Limited | Berkshire. | 1987 |
| 24 SE7EN Accountants Limited | Northampton | 2005 |
| 24 Seven FLIX4U Limited | Stanmore | 2002 |
| 24 Seven Limited | Folkestone | 2000 |
| 24 Seven Taxis (East Lothian) Ltd. | Musselburgh | 2008 |
| 24 Tavistock Road Limited | London | 2001 |
| 24 Tax and Consulting Ltd | Brentford | 2019 |
| 24 the Blog Ltd | London | 2026 |
| 24 the Consultancy Ltd | London | 2026 |
| 24 the Marketing Ltd | London | 2026 |
| 24 Warrington Crescent Owners Limited | Tetbury | 2006 |
| 24-7 Advice Team Ltd | Manchester | 2016 |
| 24-7 Catering Supplies Ltd | Barwell | 2015 |
| 24-7 Fire Safety Ltd | East Malling | 2012 |
| 24-7 Holdings Limited | Knutsford | 2009 |
| 24-7 Locksmith Services Ltd | Colchester | 2009 |
| 24-7 Response Group Ltd | London | 2021 |
| 24-7 Surveys Limited | Birmingham | 2021 |
| 24/26 Holdings Ltd | Glasgow | 2014 |
| 24/30 Pipework Solutions Ltd | Hamilton | 2021 |
| 24/7 Accountants and Tax Advisors Ltd | Birmingham | 2023 |
| 24/7 Accountants Ltd | Ilford | 2022 |
| 24/7 Comms Limited | Manchester | 2004 |
| 24/7 Energy Care Ltd | Rotherham | 2017 |
| 24/7 Exhibition Services Limited | Birmingham | 2004 |
| 24/7 Global Limited | Camberley | 2015 |
| 24/7 JP Maintenance Limited | Hull | 2006 |
| 24/7 Maintenance Support Ltd | Westbury | 2026 |
| 24/7 Managed Solutions Limited | Loughborough | 2019 |
| 24/7 Powered Access Support Limited | Newport | 2018 |
| 24/7 Promotions Limited | Wickford | 2026 |
| 24/7 Quality Solutions Ltd | Leamington Spa | 2023 |
| 24/7 Recovery (IW) Limited | Sandown | 2019 |
| 24/7 Service Hub Ltd | London | 2023 |
| 24/7 Solutions Limited | Coventry | 2020 |
| 24/THREE Consultants Ltd | Newark | 2021 |
| 240 Portobello Ltd | London | 2019 |
| 2400 Law Ltd | London | 2021 |
| 2402 Consulting Ltd | London | 2026 |
| 2402 Ltd | London | 2025 |