| Jago Educational Services Ltd | London | 2019 |
| Jags Foundation CIC | Croydon | 2010 |
| Jaguar Cricket Ltd | Stafford | 2022 |
| Jaguars Rugby Academy Ltd | Milton Keynes | 2024 |
| Jaguars Swimming Club Ltd | London | 2020 |
| JAH Driving School Ltd | Nottingham | 2025 |
| JAH Education Limited | Bedford | 2025 |
| Jahan Care Center Limited | Peterborough | 2026 |
| Jahsar Association CIC | Birmingham | 2023 |
| JAI Edtech Ltd | Tonbridge | 2026 |
| Jaime Cotton Ltd | Luton | 2025 |
| Jaimini JL Ltd | Mildenhall | 2023 |
| Jain Healthcare Ltd | Liverpool | 2021 |
| Jaira Solutions Ltd | Hornchurch | 2022 |
| Jaisy Tutors Ltd | Croydon | 2024 |
| Jajo Services Limited | Leicester | 2025 |
| JAK (Leics) Limited | Leicester | 2009 |
| JAK Lewis Coaching Ltd | Ludlow | 2025 |
| Jake Brough Fitness Ltd | Buckingham | 2022 |
| Jake Cathcart Coaching Ltd | Sheffield | 2022 |
| Jake Harris Tuition Ltd | Leeds | 2022 |
| Jake Mcardle Coaching Ltd | Waterlooville | 2020 |
| Jakeman Consulting Ltd | Oxford | 2021 |
| Jakesamsontennis Ltd | London | 2023 |
| Jalalia Sunni Jami Masjid & Islamic Education Centre | Walsall | 2005 |
| Jalani Path Ltd | London | 2025 |
| Jalaram BAL Vikas Limited | Leicester | 2010 |
| Jalee First AID Training Ltd | Langport | 2017 |
| Jallcock Coaching Limited | Dartford | 2024 |
| Jaluch International Ltd | Ringwood | 2002 |
| JAM Ed-Tech Ltd | Arundel | 2021 |
| JAM Education Ltd | Eastbourne | 2023 |
| JAM Factory Music Limited | London | 2018 |
| JAM International Studies Academy Ltd | Antrim | 2019 |
| JAM Media Research Ltd | Leigh-On-Sea | 2017 |
| Jam-Out Junction Ltd | Rushden | 2025 |
| Jam-Pan Learning Limited | Manchester | 2014 |
| Jama Education Limited | London | 2023 |
| Jama REK Ltd | Preston | 2025 |
| Jamaica Basic Schools Foundation (UK) | London | 1996 |
| Jamaica Education Taskforce UK | London | 2017 |
| Jamaica Heart Limited | Watford | 2015 |
| Jamaica Heritage Links Ltd. | Wednesbury | 2000 |
| Jamaica School Resources | Huddersfield | 2008 |
| Jamaican Heritage UK CIC | Cannock | 2023 |
| Jamaicans Inspired CIC | London | 2025 |
| Jambyte Ltd | London | 2023 |
| Jameah Academy | Leicester | 2007 |
| James & James Medical Ltd | Bolton | 2025 |
| James Aero Limited | Herts | 2003 |
| James Allen's Girls' School | London | 2008 |
| James Barnes Education Ltd | Lichfield | 2015 |
| James Barrington Limited | Liverpool | 2013 |
| James Begley Training Academy Ltd | Liverpool | 2021 |
| James Binning Ltd | Glasgow | 2021 |
| James Connolly House Development Association | Derry City | 2016 |
| James Consulting Training Ltd | Sunderland | 2024 |
| James Coomber Ltd | Barnstaple | 2023 |
| James Dames Limited | Nottingham | 2024 |
| James Daryll COX Ltd | Gloucester | 2023 |
| James Davies Education Services Limited | Tamworth | 2023 |
| James Davies Online Coaching Limited | Bedford | 2026 |
| James Duns House Hair School Limited | Aberdeen | 2022 |
| James Education Ltd | West Norwood | 2013 |
| James Educational Consulting Limited | Maidstone | 2016 |
| James Farm Day Nursery Limited | Hook | 2013 |
| James Fogarty Coaching Limited | Telford | 2026 |
| James French Trust Technique Limited | Surrey | 2005 |
| James Harrop Driving School Limited | Macclesfield | 2019 |
| James Holloway Limited | London | 2015 |
| James Howard Education Limited | London | 2015 |
| James Kellett Motorsport Ltd | Leeds | 2021 |
| James Kerby Music Services Limited | West Molesey | 2025 |
| James Layland Tutors Limited | | 2007 |
| James Learning & Development Limited | Carlisle | 2017 |
| James Lind College of Health Sciences Ltd | London | 2024 |
| James Lloyd Limited | Southall | 2015 |
| James Lynn Ltd | Guildford | 2020 |
| James Marks Academy Trust | Hemel Hempstead | 2019 |
| James Middleton Coaching Ltd | London | 2022 |
| James Montgomery Academy Trust | Wath-Upon-Dearne | 2016 |
| James Oglethorpe PRE School Ltd | Rochford | 2017 |
| James Percy Foundation | London | 2011 |
| James Perry Consulting Limited | Downpatrick | 2017 |
| James Power Fight Academy Limited | Ossett | 2026 |
| James Rushbrooke Coaching Ltd | Weeton | 2026 |
| James Samuel Coaching Ltd | Sheffield | 2024 |
| James Sutton Education Limited | Belper | 2020 |
| James Taplin Music Ltd. | Rochester | 2023 |
| James Tiley Health & Fitness Ltd | St. Albans | 2021 |
| James Tomlinson Coaching & Facilitation Ltd | London | 2025 |
| James Veness Limited | Nottingham | 2012 |
| James Willis Coaching Ltd | Wolverhampton | 2023 |
| James-Lee Consultancy Ltd | London | 2010 |
| Jamesnoel Limited | Tranent | 2025 |
| Jameswell Ltd | Aberdare | 2004 |
| Jamfootball Limited | Reigate | 2026 |
| Jamhaus Community Music Hub CIC | Ashbourne | 2026 |
| Jamhuri Cultural Vibes CIC | Harlow | 2026 |
| Jamia Academy Luton Ltd | Luton | 2024 |