| 360VISION Security Ltd | Amersham | 2019 |
| 360VISION System Ltd | Amersham | 2024 |
| 360VISTA Ltd | Ramsgate | 2008 |
| 360XEC Executive Search Limited | Bodmin | 2013 |
| 361 Global Ltd | Leeds | 2024 |
| 363 Services (UK) Limited | Wakefield | 2014 |
| 364 Uxbridge Road (Acton) Residents Company Limited | London | 2003 |
| 365 Artificial Grass Ltd | Harrow | 2025 |
| 365 Artists Limited | London | 2002 |
| 365 Boxing Management Ltd | Potters Bar | 2023 |
| 365 Building Maintenance Limited | Bournemouth | 2018 |
| 365 Car Hire Ltd | London | 2024 |
| 365 Care Gloucester Limited | Gloucester | 2026 |
| 365 Care Gloucestershire Ltd | Gloucester | 2026 |
| 365 Care Needs Bury Ltd | Bury St. Edmunds | 2026 |
| 365 Care Needs Limited | Gloucester | 2025 |
| 365 Care Worcester Limited | Gloucester | 2026 |
| 365 Clean Ltd | Manchester | 2019 |
| 365 Clean Team Limited | London | 2025 |
| 365 Cleaning Services Ltd | Hull | 2025 |
| 365 Consult Ltd | Ashbourne | 2025 |
| 365 Consultancy Solutions Ltd | Southampton | 2017 |
| 365 Daily Services Ltd | Surbiton | 2024 |
| 365 Dynamics Limited | Telford | 2024 |
| 365 Elite Healthcare Limited | Chadwell Heath | 2022 |
| 365 Events Ltd | Horsham | 2021 |
| 365 Exclusive Limited | Coventry | 2018 |
| 365 Facilities Management Ltd | Leeds | 2019 |
| 365 Fire & Security Group Limited | Dinas Powys | 2024 |
| 365 Flights Ltd | Telford | 2022 |
| 365 Foods Limited | Cardiff | 2018 |
| 365 Guarding Ltd | London | 2021 |
| 365 Hire Limited | Sandwich | 2013 |
| 365 Hire Plus Ltd | Grays | 2017 |
| 365 Hire Services Limited | Windsor | 2012 |
| 365 Landscaping Ltd | Manchester | 2023 |
| 365 Local Storage Limited | Chesterfield | 2017 |
| 365 Marketing Limited | Stockport | 2012 |
| 365 Medical Alert Solutions Ltd | Bournemouth | 2020 |
| 365 Outsourcing Ltd | Barking | 2023 |
| 365 PCO Hire Ltd | Luton | 2021 |
| 365 People Limited | Tugby | 2020 |
| 365 Personnel Ltd | Lincoln | 2019 |
| 365 Premiere Healthcare Limited | London | 2015 |
| 365 Property Maintenance Couk Limited | Nottingham | 2025 |
| 365 Protection Force Ltd | Wolverhampton | 2024 |
| 365 Protection Ltd | Ilford | 2024 |
| 365 Resource Limited | Bedford | 2013 |
| 365 Resource Solutions Ltd | Stowmarket | 2023 |
| 365 Resourcing Ltd | London | 2025 |
| 365 Secure Ltd | Hyde | 2019 |
| 365 Security & Support Services Ltd | London | 2026 |
| 365 Security Concepts Ltd | Nottingham | 2025 |
| 365 Security Ltd | Leicester | 2017 |
| 365 Security Management Ltd | Crawley | 2020 |
| 365 Security Solutions Ltd | Ilford | 2023 |
| 365 Site Services Ltd | Gateshead | 2022 |
| 365 Sports Digital Limited | Derby | 2021 |
| 365 Steps Limited | Hitchin | 2023 |
| 365 the World Limited | Bristol | 2013 |
| 365 Total Security Limited | Leeds | 2014 |
| 365 Travel Group Ltd | London | 2022 |
| 365 Tutor Limited | Brentwood | 2020 |
| 365 Work Solutions Ltd | Ilford | 2023 |
| 365CAMPERHIRE Limited | Fleet | 2026 |
| 365CLEANING Limited | High Wycombe | 2021 |
| 365PRIZE Ltd | London | 2025 |
| 365VISION Ltd | Nottingham | 2023 |
| 365WORK Limited | Leeds | 2018 |
| 368 Talent Ltd | Newcastle | 2026 |
| 3689 Ltd | Covent Garden | 2022 |
| 369 Financial Services Ltd | Epsom | 2024 |
| 369 Marine Road East RTM Company Limited | Morecambe | 2014 |
| 36B Gloucester Road Limited | Bristol | 2007 |
| 36ONE Ltd | Newport | 2020 |
| 36T Specialist Security Investigations Risk Management Limited | Wembley | 2023 |
| 36TY Events Management Ltd | London | 2019 |
| 37 ABB EAG Limited | Bedford | 2019 |
| 37 Abingdon Road Ltd | London | 2017 |
| 37 Bridges Limited | Leigh-On-Sea | 2021 |
| 37 Croham Park Avenue Management Limited | South Croydon | 2003 |
| 37 Degrees Films Limited | Sheffield | 2004 |
| 37 Haldon Road (Exeter) Management Limited | Exeter | 1997 |
| 37 Selby Road RTM Company Ltd | London | 2015 |
| 37 Soho Square Freehold Limited | London | 2014 |
| 37-39 Adys Road Freehold Limited | London | 2011 |
| 37-39 Connell Crescent Limited | London | 2003 |
| 37-41 Mortimer GP Ltd | London | 2016 |
| 37/39 Eastfield Road (Management Co) Limited | Burnham | 1996 |
| 37/39 Maida Vale Limited | London | 2008 |
| 378-380 Kettering Road Residents Limited | Northampton | 2008 |
| 379 Degrees Travel Ltd | Manchester | 2025 |
| 37B Millharbour Limited | Rickmansworth | 2015 |
| 37M Limited | Oxford | 2016 |
| 38 Alma Vale Road Management Limited | Bristol | 1993 |
| 38 Degrees North Limited | Haslemere | 2013 |
| 38 Gordon Place Limited | London | 2014 |
| 38 Graham Street Management Limited | London | 2016 |
| 38 Limited | London | 2022 |
| 38 Nelson Road (Southsea) Freehold Ltd | Southsea | 2018 |