| Jamia Al-Hudaa | Nottingham | 2024 |
| Jamia Al-Karam | Nottinghamshire | 2006 |
| Jamia Alfurqan Limited | Birmingham | 2012 |
| Jamia Bukharia Qadiriyyah Ltd | Peterborough | 2023 |
| Jamia Fatmia Qadria Jilania Limited | London | 2018 |
| Jamia Islamia (Birmingham) Trust Limited | Sparkbrook | 2007 |
| Jamia Islamia Trust UK Limited | Manchester | 2026 |
| Jamia Khair-Ul Madaris | Glasgow | 2022 |
| Jamia Masjid Gousia (Telford) | Telford | 2012 |
| Jamia Noor UL Quran and Community Centre | Ilford | 2018 |
| Jamia Rizvia Mazhar-E-Islam Ltd | London | 2023 |
| Jamia Rizvia Misbah UL Quran Limited | Wakefield | 2019 |
| Jamiat Ulama-I-Hind UK Ltd | Bolton | 2008 |
| Jamiatus Salihat | London | 2021 |
| Jamie Aston Limited | London | 2005 |
| Jamie Burns Transformations Ltd | Sheffield | 2023 |
| Jamie Callaghan Studios Ltd | St. Helens | 2025 |
| Jamie Catto Mentoring Ltd | Potters Bar | 2014 |
| Jamie Hewitt Cricket Ltd | Hitchin | 2021 |
| Jamie Selby Limited | Nottingham | 2020 |
| Jamie Tupholme Ltd | Spalding | 2015 |
| Jamie Wall Racing Ltd | Kidderminster | 2020 |
| Jamiebreeno Ltd | St. Albans | 2025 |
| Jamies Gymnastics Academy Ltd | Beckenham | 2014 |
| Jamieson School of Music Ltd | Whitley Bay | 2024 |
| Jamie’S Driving School Ashford Kent Limited | Ashford | 2026 |
| Jamila's Legacy CIC | Leicester | 2022 |
| Jammiaalquran Limited | London | 2022 |
| Jamoe Ltd | London | 2019 |
| Jamrock Media CIC | Luton | 2019 |
| Jamyang Buddhist Centre | London | 2004 |
| Jamyang Buddhist Centre Leeds | Leeds | 2005 |
| Jamz Group Ltd | London | 2023 |
| Jamz Tutoring Ltd | London | 2026 |
| JAN Woods Social Care Limited | Cleethorpes | 2008 |
| JAN Challenor Career Coaching Limited | Dudley | 2025 |
| JAN Day Workshops Limited | Canterbury | 2016 |
| JAN Driving Academy Ltd | London | 2024 |
| JAN Dubiel Ltd | Birmingham | 2023 |
| JAN Linsley Education Consultancy Ltd | Leyburn | 2011 |
| JAN Marriott Associates Limited | Malvern | 2010 |
| JAN Preschool Limited | London | 2019 |
| JAN Robinson Early Years Limited | London | 2019 |
| Jan's Little Learners Ltd | Wallasey | 2024 |
| Janazah Limited | Walsall | 2019 |
| Janbarree Limited | Northampton | 2000 |
| Jancett Childcare & Jace Training Limited | Wallington | 2007 |
| Janda (UK) Ltd | Stockport | 2009 |
| Janda Education Services Limited | Faversham | 2018 |
| Jandj Education Services Ltd | London | 2019 |
| Jane Ashman Limited | Amlwch | 2017 |
| Jane Baker Education and Skills Limited | Kings Langley | 2013 |
| Jane Branson Learning Limited | Radstock | 2015 |
| Jane Brooks Gym and Swim Ltd | Salisbury | 2023 |
| Jane C. Oliver Educational Consultancy Limited | Worthing | 2008 |
| Jane Friswell Send Consultancy Limited | Coventry | 2018 |
| Jane Hayward Services Ltd | Stratford-Upon-Avon | 2025 |
| Jane Jones MES Limited | Holywell | 2018 |
| Jane Morrey Music Limited | Lichfield | 2002 |
| Jane Portman & Associates Ltd | Ferndown | 2019 |
| Jane Wonnacott Safeguarding Consultancy Limited | Farnham | 2015 |
| Jane, Help! Ltd | London | 2024 |
| Janeimuwa Legacy | London | 2024 |
| Janela Inversiones Ltd | Woking | 2018 |
| Janes Educational C.I.C. | Caterham | 2015 |
| Janet Fisher Education Limited | Lichfield | 2019 |
| Janet Hill Coaching Ltd | Maidstone | 2012 |
| Janet Marshall Limited | Gloucestershire | 2002 |
| Janet Murphy Driving School Ltd | Huddersfield | 2013 |
| Janet Waldron Education Support Ltd | Llanelli | 2020 |
| Janey Care Limited | Southport | 2025 |
| Janey LEE Grace Training Ltd | Kings Langley | 2022 |
| Jangler Ltd | Bournemouth | 2023 |
| Jangu Ltd | London | 2025 |
| Janhatchellsendconsultancy Ltd | Thetford | 2023 |
| Janice Hennessy Limited | Dartford | 2009 |
| Janina-Daniela Lifestyle Studios Limited | Blackpool | 2022 |
| Janine Boston Tuition Limited | Southend On Sea | 2017 |
| Janison Education UK Ltd | London | 2022 |
| Janissary Interviews Limited | Nuneaton | 2024 |
| Janist Associates Limited | Ringwood | 2016 |
| Janna Spannagel Coaching Ltd | Benfleet | 2020 |
| Jannat Academy Ltd | London | 2021 |
| Jannat AL Quran Ltd | London | 2017 |
| Jannat Education Ltd | London | 2021 |
| Jannaty Friends Limited | Wynyard | 2025 |
| Jannde Limited | Brighton | 2016 |
| Janner & Kernow Caravan Training Limited | St Austell | 2020 |
| Janus Coaching Ltd | Bristol | 2023 |
| Janus Learning Ltd | Andover | 2025 |
| Janus-Cpd Limited | Nottingham | 2023 |
| Janvin Medical Ltd | Brough | 2022 |
| Jaoska Ltd | London | 2025 |
| Japan - London Study and Sport Ltd | London | 2023 |
| Japan Europe Entrepreneurs Forum Limited | Wembley | 2003 |
| Japan House London Trust | London | 2018 |
| Japan Language Factory Ltd | London | 2021 |
| Japan UK Adventures Ltd | London | 2022 |
| Japan UK Art and Museum Limited | Teddington | 2007 |
| Japanese Abacus and Mental Arithmetic (Jama) UK Ltd | Prenton | 2016 |