| Eder Invest Ltd | Real estate | 2020 |
| Elevare Strategy Ltd | Professional & scientific | 2025 |
| Elion J Limited | Manufacturing | 2025 |
| ELM House Tenants Ltd | Households | 2026 |
| Elms Commercials Ltd | Wholesale & retail | 2023 |
| ELS Recruitment Ltd | Administrative & support | 2023 |
| EMC Hire Limited | Administrative & support | 2015 |
| Emersion Insights Ltd | Professional & scientific | 2020 |
| Emile Properties Ltd | Financial services | 2021 |
| Enarae Restoration Care Ltd | Health & social care | 2025 |
| ES Cleaning Ltd | Administrative & support | 2019 |
| Excellence Optimize Limited | Information & communication | 2025 |
| F B Parrish and SON Limited | Agriculture & fishing | 2015 |
| F.L.Greenwood Limited | Construction | 1972 |
| Fanpath Consulting Ltd | Information & communication | 2024 |
| Feline Exceptional Properties Limited | Construction | 2023 |
| Feline Fabulous Publishing Limited | Information & communication | 2023 |
| Ferita Consultancy Services Ltd | Health & social care | 2023 |
| Ferranti P&D Limited | Education | 2021 |
| Fftf Investment Holdings Ltd | Real estate | 2026 |
| Fifth Finance Group Limited | Other services | 2025 |
| Figment Architecture Ltd | Professional & scientific | 2019 |
| Fildyke Road Management Company Limited | Households | 2007 |
| Fireguard Contracting Limited | Manufacturing | 1987 |
| Fireguard Holdings Limited | Professional & scientific | 1996 |
| First Lodge Farm Properties Limited | Real estate | 2003 |
| FIT4WEB Limited | Information & communication | 2011 |
| Fitzcount Land Ltd | Real estate | 2020 |
| Five N Limited | Real estate | 2006 |
| FIVE5MUSIC Ltd | Information & communication | 2019 |
| Flavour Saviours Ltd | Wholesale & retail | 2019 |
| Flitwick Securities Limited | Real estate | 1964 |
| Folium Pictures Ltd | Information & communication | 2026 |
| Forest Flora & Co Limited | Wholesale & retail | 2023 |
| FOX Medical Aesthetics Limited | Health & social care | 2022 |
| Foxberry Developments (Ickleford) Limited | Real estate | 2022 |
| Freeview UK Ltd | Information & communication | 2010 |
| Freshfeed Management Ltd | Manufacturing | 2025 |
| Friendly Forces Global Ltd | Professional & scientific | 2024 |
| Fully Fused Fireworks Limited | Arts & recreation | 2004 |
| G F Mechanical Services Limited | Manufacturing | 2015 |
| G&G Homes Limited | Real estate | 2025 |
| G.M.A. Electrical Contractors Limited | Construction | 2016 |
| GAC Installations Limited | Construction | 2018 |
| Gallop & Groom Limited | Agriculture & fishing | 2025 |
| Garden City Services LLP | | 2006 |
| Garden Collective Landscapes Ltd | Construction | 2026 |
| Gasp Events Limited | Administrative & support | 2010 |
| Gavin O'Brien Ltd | Other services | 2017 |
| GET Wired Electrical Management Limited | Construction | 2015 |
| Gigi Homes Limited | Real estate | 2021 |
| Giles Fine Foods Ltd | Wholesale & retail | 2026 |
| GIN Barnard Ltd | Wholesale & retail | 2020 |
| GJ Build Limited | Administrative & support | 2015 |
| Glamour by MEL Ltd | Other services | 2024 |
| Glofitness & Mentoring CIC | Education | 2026 |
| Glofitnessuk Ltd | Education | 2023 |
| GLS Test Management Ltd | Professional & scientific | 2019 |
| GOA Finance Limited | Professional & scientific | 2014 |
| Godfrey's Lane Management Limited | Extraterritorial | 2012 |
| Gooda Life Ltd | Construction | 2025 |
| Gooda Life Property Ltd | Real estate | 2026 |
| Goodhew Holdings Ltd | Real estate | 2023 |
| Goodhew Properties Ltd | Financial services | 2023 |
| Gothard Rowe Property Services Ltd | Professional & scientific | 2024 |
| Grand Paving & Building Ltd | Administrative & support | 2025 |
| Green Machine ECC Ltd | Wholesale & retail | 2017 |
| Greenjelley Ltd | Wholesale & retail | 2025 |
| Grey Isle Ltd | Professional & scientific | 2018 |
| Grss Green Goals CIC | Education | 2025 |
| Grss Renewables Ltd | Construction | 2025 |
| Grssroots Ltd | Professional & scientific | 2024 |
| GSP Consulting Ltd | Construction | 2024 |
| Gtecs Operations Limited | Manufacturing | 2021 |
| Guzel Grooming Ltd | Other services | 2021 |
| H.G.Millard Limited | Agriculture & fishing | 1946 |
| H2OPE Ltd | Wholesale & retail | 2020 |
| Habitat Food Limited | Information & communication | 2026 |
| Haji Bashir Foods Ltd | Hospitality | 2026 |
| Halo SSC Ltd | Administrative & support | 2017 |
| Hankin Digital Limited | Information & communication | 2021 |
| Hanlon Equipment Sales Limited | Wholesale & retail | 2016 |
| Hanlon Holdings Limited | Professional & scientific | 2003 |
| HAO JIA Limited | Hospitality | 2019 |
| Harding & Baxter Investments Ltd | Real estate | 2023 |
| Hardy Computing Limited | Administrative & support | 2025 |
| Hare-Group Ltd | Construction | 2023 |
| Hark Properties Ltd | Construction | 2020 |
| Harrison & Casey Limited | Hospitality | 2018 |
| HAZ Guzel Ltd | Hospitality | 2023 |
| Hazel Copse Management Limited | Real estate | 2021 |
| Hazelnut Electrical Ltd | Construction | 2018 |
| HD Property Services Limited | Construction | 2009 |
| Headlines of Shefford Ltd | Other services | 2025 |
| Headlines of Shefford Unisex Ltd | Other services | 2026 |
| Hedron Creative Limited | Manufacturing | 2014 |
| Henry Isaac Fireplaces Limited | Wholesale & retail | 2005 |
| Herald Land LLP | | 2003 |
| Heritage Construction Hitchin Limited | Other services | 2016 |
| Herts & Beds Properties Limited | Construction | 2007 |