| 4MATION Care Ltd | London | 2019 |
| 4MATION HCM Ltd | London | 2017 |
| 4MATION Holdings Ltd | Rickmansworth | 2024 |
| 4MATION Ltd | London | 2015 |
| 4MATIX Limited | Pontyclun | 2011 |
| 4MERIT Ltd | Manchester | 2021 |
| 4MINDS Ltd | Pontypool | 2021 |
| 4MOBILITY Ltd | Longham | 2009 |
| 4MOST (Europe) Limited | London | 2011 |
| 4MOST Resourcing Limited | Stevenage | 2007 |
| 4MOTION Hire Ltd | Doncaster | 2010 |
| 4MULA1 Cleaning Services Ltd | Walsall | 2025 |
| 4MVNO Limited | Milford Haven | 2015 |
| 4MYSCHOOLS Ltd | London | 2009 |
| 4NELD Ltd | Warrington | 2022 |
| 4NET Holdings Ltd | Manchester | 2017 |
| 4ORTH Group Ltd | Leeds | 2025 |
| 4OXY Limited | Telford | 2024 |
| 4P4 Ltd | London | 2022 |
| 4PARK Stories Limited | Stoke-On-Trent | 2026 |
| 4PAWS Grooming Ltd | Wantage | 2026 |
| 4PG London Limited | London | 2025 |
| 4PHARMA Limited | Maidenhead | 2018 |
| 4PI Ltd | London | 2020 |
| 4PROMOTION.2 Ltd | Crick | 2012 |
| 4PROPERTY Consult Ltd | Leek | 2012 |
| 4PS Management Company Ltd | Bristol | 2015 |
| 4PUBLIC Sector Ltd | London | 2015 |
| 4QUEST Ltd | Lytham St. Annes | 2019 |
| 4R Civil Protection Ltd | London | 2025 |
| 4R Future Holdings Limited | Londonderry | 2022 |
| 4REALSERVICES Limited | Wolverhampton | 2025 |
| 4RED Planning Ltd | Warrington | 2013 |
| 4REDDOGS Limited | London | 2023 |
| 4REN6 Limited | Rotherham | 2013 |
| 4RIIS Ltd | Gloucester | 2025 |
| 4RSECURITY Ltd | London | 2018 |
| 4RT Cleaning Ltd | Birmingham | 2024 |
| 4RWAITH CYF | Lampeter | 2016 |
| 4S Business Support Ltd | Leicester | 2023 |
| 4S Estates Ltd | London | 2024 |
| 4S Imaging Ltd | Leeds | 2025 |
| 4SEASONSCLEAN Ltd | London | 2021 |
| 4SEC Ltd | Leicester | 2005 |
| 4SERVE Limited | York | 2012 |
| 4SHIRES Gardens and Landscapes Limited | Blackpool | 2011 |
| 4SIGHT Imaging Limited | Preston | 2004 |
| 4SIGHT Limited | Hertfordshire | 2000 |
| 4SIGHT Risks Group Limited | Horsham | 2017 |
| 4SIGHTCLEANINGSERVICE Limited | Nottingham | 2025 |
| 4SITE Recruitment Limited | Fareham | 2018 |
| 4SITE Telecoms UK Ltd | Monmouthshire | 2013 |
| 4SP Solutions Ltd | London | 2022 |
| 4SQUARE Recruitment Ltd | Reading | 2023 |
| 4SQUARE Security Limited | Dudley | 2019 |
| 4SSG UK Limited | Birmingham | 2018 |
| 4STAR Security Services Ltd | Coventry | 2013 |
| 4SURE Recruitment Solutions Limited | Pensby | 2023 |
| 4TD Limited | Lee-On-The-Solent | 2020 |
| 4TECH Consultants Limited | Manchester | 2012 |
| 4TECH Services Ltd | London | 2024 |
| 4TFY Ltd | Bexley | 2012 |
| 4TH Battalion Security Ltd | Smethwick | 2011 |
| 4TH Corner Limited | Banbury | 2003 |
| 4TH D Landscape Services Limited | Oldham | 2005 |
| 4TH Day Events Ltd | London | 2023 |
| 4TH Dimension Cars Ltd | Rochdale | 2020 |
| 4TH Dimension Luxury Ltd | Manchester | 2020 |
| 4TH Floor Properties Limited | Wimbledon | 2006 |
| 4TH Floor Studios Limited | Peterborough | 2015 |
| 4TH Option Ltd | Whalley | 2021 |
| 4TH Wall Theatrics Ltd | Nottingham | 2025 |
| 4THD Christmas Services Ltd | Kidlington | 2024 |
| 4THEPLOT Ltd | London | 2025 |
| 4TIFY Ltd | Ellesmere Port | 2024 |
| 4TIFY Provisory Ltd | Ellesmere Port | 2024 |
| 4TIFY Security Consultant Ltd | Hillsborough | 2024 |
| 4TN Consulting Ltd | Gosport | 2014 |
| 4TRESS Services Limited | Manchester | 2008 |
| 4TUNE8 Limited | Trowbridge | 2014 |
| 4TY Planning Ltd | Sidcup | 2022 |
| 4U Brands Ltd | Cullompton | 2017 |
| 4U Care Ltd | London | 2026 |
| 4U Consultancy Group Ltd | Nottingham | 2024 |
| 4U Finance Ltd | Nottingham | 2019 |
| 4U Gardens Ltd | Thatcham | 2025 |
| 4U Healthcare Recruitment Ltd | Slough | 2022 |
| 4U Housekeeping Limited | London | 2019 |
| 4U Scooters Ltd | Hornchurch | 2026 |
| 4UHEALTHANDSAFETY Limited | Enfield | 2009 |
| 4UKSOFACLEANERS Ltd | London | 2026 |
| 4UNITY UK Limited | London | 2021 |
| 4UNOWORRIES Ltd | Linford Wood | 2014 |
| 4V Holdings Ltd | London | 2023 |
| 4V4 Construction Recruitment Group Ltd | London | 2021 |
| 4VM Limited | Milton Keynes | 2025 |
| 4WALL Entertainment UK Limited | Chelmsford | 2005 |
| 4WARD Cleaning Services Ltd | King'S Lynn | 2019 |
| 4WARD Employment Services Limited | Stonehouse | 2018 |
| 4WARD Property Solutions Limited | Halesowen | 2011 |