| Greenleaf Technologies Ltd | Construction | 2011 |
| Gremlins UN Limited | Hospitality | 2020 |
| Grey Bear Blinds Ltd | Manufacturing | 2023 |
| Gridcivils Ltd | Administrative & support | 2016 |
| Gridworx Limited | Construction | 2011 |
| GRS Financial Solutions Limited | Financial services | 2013 |
| GT Display Limited | Manufacturing | 2015 |
| GTA Cars Limited | Wholesale & retail | 2003 |
| Gurleen Enterprise Ltd | Wholesale & retail | 2019 |
| Gym Jedi Consultancy Ltd | Wholesale & retail | 2019 |
| H a S Groundworks Limited | Construction | 2020 |
| H2 Events Management Services Limited | Information & communication | 2018 |
| Hair for MEN Academy Shoreditch Ltd | Other services | 2019 |
| Hairshark Limited | Administrative & support | 2016 |
| Hanolex Limited | Manufacturing | 1996 |
| Happy English UK Ltd | Education | 2018 |
| Harrison Dockrell Property Services Ltd | Construction | 2016 |
| Hatch Project Ltd. | Hospitality | 2014 |
| Hawksmoor Equity Limited | Real estate | 2022 |
| Hayden's (IOW) Ltd | Hospitality | 2022 |
| Haynes and Sons Contracting Ltd | Construction | 2021 |
| Haze Mechanical Ltd | Administrative & support | 2017 |
| Hcps Training Limited | Education | 2010 |
| HD Fire Protection Ltd | Construction | 2018 |
| Healthcare Fit OUT Ltd | Professional & scientific | 2023 |
| Heol Ltd | Hospitality | 2018 |
| HGV Training (Midlands) Limited | Education | 2019 |
| HI TEC Powder Coating Ltd | Manufacturing | 2019 |
| Highfield Consulting Ltd | Professional & scientific | 2019 |
| Hightown Brickwork Limited | Construction | 2016 |
| Hill View Media Limited | Information & communication | 2016 |
| Holden Pipefitting Services Ltd | Professional & scientific | 2018 |
| Hope Community Foundation | Education | 2002 |
| Hopvine Ltd | Hospitality | 2019 |
| HORI2ON Ltd | Hospitality | 2020 |
| Hortons Heating Limited | Construction | 2018 |
| House Hold Appliances 247 Limited | Financial services | 2020 |
| HUG Hotels Ltd | Hospitality | 2020 |
| Hunt Catering & Events Wales Ltd | Hospitality | 2022 |
| Hutchinson Wealth Management Ltd | Professional & scientific | 2012 |
| Hyped UP Acoustics Ltd | Manufacturing | 2011 |
| I K Pizza Ltd | Hospitality | 2018 |
| I P Jones and SON Limited | Construction | 2003 |
| I-Brochure Limited | Professional & scientific | 2012 |
| Iamcorsley Ltd | Hospitality | 2024 |
| IAN Butler Ltd. | Professional & scientific | 2014 |
| Ikon IT Ltd | Information & communication | 2007 |
| Immortal Media LLP | | 2022 |
| Improovu Limited | Health & social care | 2022 |
| IN Business Group Limited | Professional & scientific | 2007 |
| Independent Scaffolding Limited | Construction | 2018 |
| Infinite Trading Group Limited | Hospitality | 2019 |
| Inflatablezone Ltd | Arts & recreation | 2017 |
| Inspire Hair & Beauty Ltd | Other services | 2012 |
| Insulating Group Limited | Wholesale & retail | 2013 |
| Integral Joinery Ltd | Construction | 2012 |
| Integrity Recruitment Consultancy Limited | Administrative & support | 2006 |
| Inter-Trans Solutions Ltd | Transport & logistics | 2014 |
| J & W Installations Ltd | Construction | 2007 |
| J&R Williams Electrical Ltd. | Construction | 2019 |
| J. M. Chisholm Limited | Other services | 1994 |
| James Crossley Technical Services Ltd | Arts & recreation | 2015 |
| James of Westminster Ltd | Real estate | 2019 |
| James Price Structural Glazing Ltd | Construction | 2013 |
| Jamie Kesavan Ltd | Information & communication | 2016 |
| JB Project Services Ltd | Other services | 2016 |
| JET Lounge Ltd | Hospitality | 2018 |
| JFM Joinery & Building Services Ltd | Construction | 2016 |
| JG Construction SW Limited | Construction | 2013 |
| Jigsaw Print Limited | Manufacturing | 2017 |
| JMC & Mark Hume Cycle Services LLP | | 2022 |
| JMS Aggregate Supplies Limited | Wholesale & retail | 2011 |
| Jobskilla Ltd | Information & communication | 2016 |
| John Charles Motors Ltd | Other services | 2019 |
| John Street Bakery Limited | Manufacturing | 2014 |
| Joyfuel Ltd | Hospitality | 2023 |
| JPC Events Ltd | Arts & recreation | 2019 |
| Jurassic Bark Online Limited | Wholesale & retail | 2021 |
| K Interiors Limited | Wholesale & retail | 2017 |
| K. Croft Transport Ltd | Transport & logistics | 2021 |
| Kaszynski UK Limited | Transport & logistics | 2018 |
| Kaytex Limited | Manufacturing | 2015 |
| KBS Depot Ltd | Wholesale & retail | 2020 |
| Kelf&Co Ltd | Hospitality | 2019 |
| Kelway Couriers Ltd | Transport & logistics | 2018 |
| Kidger and Smeeth Limited | Hospitality | 2015 |
| King Textiles Ltd | Wholesale & retail | 2006 |
| Kirby Hill Holdings Ltd | Health & social care | 2019 |
| Kitchen of Kent Limited | Hospitality | 2015 |
| KML Legal Advice Ltd. | Information & communication | 2019 |
| Knowledge Through Growth C.I.C. | Education | 2016 |
| Konstruct Recruit UK Ltd | Administrative & support | 2019 |
| Kube Media Limited | Information & communication | 2024 |
| L & S Hair & Beauty Limited | Other services | 2015 |
| Ladybirds Nursery (Bolton) Limited | Health & social care | 2015 |
| Laura Wheatcroft Personal Training Ltd | Arts & recreation | 2019 |
| Lawcheck Ltd | Professional & scientific | 2011 |
| LE Coop Ltd | Hospitality | 2019 |
| LE Nail Works Ltd | Other services | 2010 |
| Leaps Innovation Ltd | Professional & scientific | 2017 |