| Jobo Cares CIC | London | 2023 |
| Jobs and Business Glasgow | Glasgow | 1988 |
| Jobs Link (UK) Ltd | London | 2017 |
| Jocisca Care Company Limited | London | 2021 |
| JOE Hassell Command Ltd | Exeter | 2023 |
| Joebrennacare Limited | Liverpool | 2021 |
| Joel Needham TM Ltd | Doncaster | 2025 |
| John Clark TM Ltd | Doncaster | 2025 |
| John Donnelly Consultancy Ltd | Motherwell | 2023 |
| John Larking Limited | South Harting | 2022 |
| John Patterson Fire Protection Systems Ltd | Clitheroe | 2002 |
| John Storer Charnwood | Loughborough | 2001 |
| Johnsons Tax Administration Limited | Northants | 2024 |
| Johnstones Homecare Ltd | Bourn | 2018 |
| Joining Hands Healthcare Ltd | Bicester | 2021 |
| Joint Civil AID Corps Limited | Warrington | 2026 |
| Joint Forum Limited | Swindon | 2006 |
| Joint Inspection Team for Building Safety (Wales) Limited | Cardiff | 2023 |
| Joisem Ltd | Swindon | 2020 |
| Joji and NAN Investment Limited | Leicester | 2025 |
| Jola SAM Limited | Birmingham | 2026 |
| Joler Ltd | Coventry | 2021 |
| Jolie MJ & Co Ltd | Bristol | 2021 |
| Joly Ltd | Barnsley | 2019 |
| Jome's Health Care Limited | Leeds | 2026 |
| Jomel Limited | Barking | 2024 |
| Jonathan Kirk TM Ltd | Doncaster | 2025 |
| Jonesy Safety Services Ltd | Newark | 2024 |
| Jorvos Solutions Ltd | London | 2023 |
| Joseph Akono Bilongo Ltd | Croydon | 2021 |
| Jovisa Limited | Hull | 2019 |
| Joy &Josh Services Limited | Stotfold,Hitchin | 2022 |
| Joy in Health CIC | Coalville | 2021 |
| Joy Titilayo Foundation | Peterborough | 2021 |
| Joyce Authentic Care Ltd | Abingdon | 2024 |
| JOYHEALTHCARESERVICES5 Ltd | London | 2022 |
| Joyify Healthcare Limited | Manchester | 2022 |
| Joymitch Ltd | London | 2024 |
| JP Fire Prevention Ltd | Sunderland | 2025 |
| JP Rajendran Ltd | Birmingham | 2023 |
| JP Safeguarding Improvement Consultancy Limited | Ely | 2024 |
| JP Solutions (Sheffield) Ltd | Sheffield | 2020 |
| Jp&G Group Ltd | Peterborough | 2018 |
| Jpec Fire and Security Limited | East Grinstead | 2023 |
| JPS Firelex Ltd | Sheffield | 2021 |
| JPS Safety Solutions Ltd | Newry | 2022 |
| Jpshikesandbikes Limited | Liverpool | 2025 |
| Jptm Ltd | Doncaster | 2023 |
| JR Horizon Care Home Ltd | Manchester | 2026 |
| JRG Fire Consultancy Ltd | Holyhead | 2023 |
| JRH Enable Ltd | Bath | 2019 |
| JRL Homecare Ltd | Prestonpans | 2025 |
| JRW Trading Ltd | Bath | 2023 |
| JS Fire Consultancy Ltd | Durham | 2023 |
| JS Home Touch Care Services Limited | Shildon | 2024 |
| JS2 Health Limited | St. Albans | 2023 |
| JSD Healthcare Ltd | Stafford | 2023 |
| Jsecurity Limited | Pontypridd | 2019 |
| Jsgextinguishers Ltd | Taunton | 2024 |
| JSK Consultancy Solutions Ltd | Lee On The Solent | 2023 |
| JSL D-B Ltd | Coulsdon | 2016 |
| JSM Passive Fire Protection Ltd | Sheerness | 2021 |
| JT Fire Safety Consultants Limited | Holmfirth | 2020 |
| JT Wellness and Performance Ltd | London | 2025 |
| JTC Fire Ltd | Buckhurst Hill | 2025 |
| JTC Solutions Limited | Harlow | 2022 |
| JTH Fire Safety Ltd | Bolton | 2019 |
| JTM Forex Ltd | London | 2023 |
| JTM Health Ltd | Bury St. Edmunds | 2021 |
| Jton Healthcare Ltd | London | 2026 |
| Jubilation Heritage Family Centre Limited | London | 2024 |
| Jubilee Midlands Limited | Birmingham | 2022 |
| Judah's Lion Ltd | Swansea | 2014 |
| Jude Catterall TM Ltd | Doncaster | 2025 |
| Judica Ltd | St. Albans | 2024 |
| Juds TM Ltd | Doncaster | 2024 |
| Julia Newton Consultancy Limited | Petersfield | 2024 |
| JULIET4462 Limited | Kettering | 2020 |
| Julten Healthcare Ltd | Newport | 2026 |
| Julwan Heathcare Limited | Rochdale | 2018 |
| July Two One Ltd | Bristol | 2024 |
| Juneninth Ltd | Milton Keynes | 2018 |
| Jungle TM Ltd | Doncaster | 2025 |
| Junior to Senior Limited | Bury St. Edmunds | 2021 |
| Junisa & Partners Ltd | London | 2025 |
| Juno’S Studio Ltd | Horsham | 2026 |
| Jupiter Wellness Centre C.I.C. | Manchester | 2025 |
| Jurisjustice International Limited | London | 2025 |
| Jurra Healthtech Ltd | Romford | 2025 |
| Just BE Mindful Ltd | Hamilton | 2026 |
| Just Live-In Care Ltd | Seaford | 2020 |
| Just People Consultancy Solutions Limited | Wimborne | 2025 |
| Just Shred Fitness Ltd | Bexleyheath | 2024 |
| Justcareai Ltd | Watford | 2025 |
| Justice and Accountability for Ukraine | London | 2023 |
| Justice for Minors International Ltd | Luton | 2024 |
| Justice Sector Consulting Limited | Fleet | 2017 |
| Justiceguides Limited | Lytham St. Annes | 2020 |
| JUSTICESHIELDS365 Ltd | London | 2025 |
| Justin Davies Health & Safety Training Ltd | Hemel Hempstead | 2023 |