| Decidedly Nash Ltd | Administrative & support | 2025 |
| Decisionworks Ltd | Information & communication | 2025 |
| Deck Records Ltd | Information & communication | 2021 |
| Declan Cahill Ltd | Health & social care | 2010 |
| Decorachel Ltd | Other services | 2020 |
| Deepvita Ltd | Wholesale & retail | 2025 |
| Deers Leap Properties Ltd | Construction | 2016 |
| Defaultblue House Ltd | Administrative & support | 2002 |
| Defender 3D Ltd. | Manufacturing | 2017 |
| Deft Interiors Limited | Construction | 2014 |
| Degas Consulting Limited | Information & communication | 2017 |
| Deirdre Media Limited | Information & communication | 2025 |
| Deitek Limited | Extraterritorial | 2008 |
| Dela Ltd | Wholesale & retail | 2022 |
| Delight Kebabs Pizza Fish Limited | Hospitality | 2026 |
| Deliverance Escape Rooms Limited | Arts & recreation | 2017 |
| Delos Seafood Ltd | Wholesale & retail | 2024 |
| Delta Digital Marketing Ltd | Information & communication | 2024 |
| Delta Horology Limited | Manufacturing | 2025 |
| Deltasea Limited | Manufacturing | 2016 |
| Deluxe Design and Developments Ltd | Construction | 2024 |
| Demoartstation Ltd | Information & communication | 2019 |
| Denby Bakehouse Ltd | Manufacturing | 2026 |
| Denby Dale (Lincoln) Limited | Real estate | 2024 |
| Denby Group Holdings Limited | Financial services | 2017 |
| Denikos Limited | Other services | 2010 |
| Denken Technology Ltd | Administrative & support | 2015 |
| Denlinc Investments Limited | Real estate | 2021 |
| Dennis Duck Rescue C.I.C. | Agriculture & fishing | 2021 |
| Dennis Horton & SON Ltd | Wholesale & retail | 2002 |
| Densham PUB Co Limited | Hospitality | 2022 |
| Dent Transport Limited | Transport & logistics | 2025 |
| Dent-Ease Studio Ltd | Health & social care | 2015 |
| Dentigen Limited | Health & social care | 2024 |
| Denzle Holdings Ltd | Professional & scientific | 2018 |
| DEO Law Ltd | Professional & scientific | 2020 |
| DEP Lions Ltd | Hospitality | 2025 |
| Depmate Ltd | Information & communication | 2026 |
| Derby Dermatology Ltd | Health & social care | 2012 |
| Derek Vine Limited | Financial services | 2020 |
| Dermatology London Ltd | Health & social care | 2015 |
| Design Foundry Ltd | Administrative & support | 2025 |
| Design Space Architecture Ltd | Professional & scientific | 2012 |
| Design-Nation-Uk Ltd | Other services | 2025 |
| Designs on Property Limited | Administrative & support | 2004 |
| Despot-M Solutions Ltd | Financial services | 2024 |
| Desspro Ltd | Real estate | 2021 |
| Destec Engineering Limited | Manufacturing | 1969 |
| Detect-Locate Ltd | Administrative & support | 2022 |
| Determanagement Limited | Professional & scientific | 2013 |
| DEV Teamm Ltd | Information & communication | 2022 |
| DEV Transport Ltd | Transport & logistics | 2024 |
| Develop and Promote Ltd | Information & communication | 2008 |
| Developing Brains Seminars Ltd | Education | 2025 |
| Developmentplus | Administrative & support | 1996 |
| Developments by BMS Ltd | Construction | 2022 |
| Deveron Consult Limited | Professional & scientific | 2022 |
| Devhq Systems Limited | Information & communication | 2012 |
| Devine Pharma Ltd | Manufacturing | 2024 |
| Devine Scents Ltd | Transport & logistics | 2018 |
| Devinitysolutions Ltd | Information & communication | 2026 |
| Devon Steedman-Allen Medical Writing Ltd | Professional & scientific | 2025 |
| DFT Couriers (Lincoln) Ltd | Transport & logistics | 2022 |
| DG and Company Consulting Limited | Construction | 2014 |
| DG Building and Landscapes Limited | Professional & scientific | 2023 |
| DG Civils Limited | Construction | 2020 |
| DG Couriers Limited | Transport & logistics | 2024 |
| DG Housing Ltd | Real estate | 2022 |
| DG Property Group Limited | Real estate | 2024 |
| DGG Limited | Manufacturing | 2024 |
| Dglw Consultancy Limited | Professional & scientific | 2009 |
| DGP Services Ltd | Transport & logistics | 2021 |
| DGV Transport Limited | Transport & logistics | 2017 |
| Dgvt Ltd | Information & communication | 2011 |
| DH Commodities Ltd | Water & waste | 2022 |
| DH Wind Ltd | Manufacturing | 2022 |
| Dhamma Records Ltd | Information & communication | 2024 |
| DHS Haulage Ltd | Transport & logistics | 2025 |
| DI Lusso Sports Management Ltd | Arts & recreation | 2024 |
| DI Maro Restaurants Limited | Hospitality | 2013 |
| Diagsolve Motorworks Limited | Wholesale & retail | 2025 |
| Diamond and Partners Ltd | Wholesale & retail | 2015 |
| Diamond Music Limited | Extraterritorial | 1996 |
| Diamond Nails & Spa Lincoln Ltd | Other services | 2025 |
| Diane Genders Solicitors Limited | Professional & scientific | 1993 |
| Dickinson's Designs Limited | Professional & scientific | 2001 |
| Dickson Property Management Ltd | Real estate | 2025 |
| Didsec Ltd | Information & communication | 2015 |
| Diesel Electro Services Ltd | Wholesale & retail | 2022 |
| Diesel Engine Technologies Ltd | Wholesale & retail | 2009 |
| Dietmonger UK Limited | Manufacturing | 2011 |
| Digicareuk Ltd | Professional & scientific | 2026 |
| Digital Lincoln Ltd | Information & communication | 2020 |
| Digital Media Edge Ltd | Information & communication | 2015 |
| Digitrains Ltd | Wholesale & retail | 2005 |
| DIL Awaiz Ltd | Wholesale & retail | 2026 |
| Dilari Ltd | Hospitality | 2020 |
| Dillon & Bridge Properties Ltd | Real estate | 2024 |
| DIM Courier Limited | Transport & logistics | 2018 |
| Dimar Traction Ltd | Transport & logistics | 2020 |