| Dowling Civil Engineering Ltd | Construction | 2006 |
| Dowling Holdings Limited | Financial services | 2025 |
| Down the Road Navenby Ltd | Hospitality | 2025 |
| Downholme Holdings Ltd | Real estate | 2023 |
| Dowson’S Welding and Fabrication Ltd | Manufacturing | 2024 |
| Dpek Healthcare Ltd. | Wholesale & retail | 2013 |
| DPH Maintenance Limited | Construction | 2026 |
| DPH Ozolins Limited | Manufacturing | 2013 |
| Dpt-Online Ltd | Manufacturing | 2011 |
| DR a Gupta Ltd | Health & social care | 2012 |
| DR a Kirjazovas Ltd | Health & social care | 2018 |
| DR a S Austin Ltd | Health & social care | 2012 |
| DR a S Duncombe Ltd | Health & social care | 2011 |
| DR Andrew Hatrick Ltd | Health & social care | 2011 |
| DR Brian Clapp Ltd | Health & social care | 2018 |
| DR C M Woollard Ltd | Health & social care | 2012 |
| DR Carvalho Ltd | Education | 2023 |
| DR Christian Housing Ltd | Real estate | 2024 |
| DR Christopher Day Ltd | Health & social care | 2011 |
| DR David Feuer Limited | Health & social care | 2005 |
| DR Diana Holdright Ltd | Health & social care | 2012 |
| DR G a Johnston Ltd | Health & social care | 2009 |
| DR G E a Bettany Practice Ltd | Health & social care | 2011 |
| DR G E S Faust Ltd | Health & social care | 2011 |
| DR Gary Hartnoll Ltd | Health & social care | 2018 |
| DR Giovanni Sanna Ltd | Health & social care | 2012 |
| DR J a Cooney Ltd | Health & social care | 2015 |
| DR J Collinson Ltd | Health & social care | 2012 |
| DR J L Richenberg Ltd | Health & social care | 2012 |
| DR John O`Donohue Limited | Health & social care | 2003 |
| DR Julia Scarisbrick Ltd | Health & social care | 2011 |
| DR Kidambi Ltd | Health & social care | 2025 |
| DR Louise Teare Ltd | Health & social care | 2011 |
| DR M J Maida Ltd | Health & social care | 2013 |
| DR M Panagopoulou Psychiatric Services Ltd | Health & social care | 2022 |
| DR Martin Dermatology Ltd | Health & social care | 2019 |
| DR N O'Keeffe Ltd | Health & social care | 2010 |
| DR N Spyrou Ltd | Health & social care | 2011 |
| DR Niklas Wakeham Ltd | Health & social care | 2010 |
| DR Paulina Charlesworth Ltd | Health & social care | 2022 |
| DR S a Townley Ltd | Health & social care | 2012 |
| DR S H C Anderson Ltd | Health & social care | 2009 |
| DR Sagi Limited | Health & social care | 2013 |
| DR Saira Hameed Ltd | Arts & recreation | 2021 |
| DR Sandeep Varma Ltd | Health & social care | 2012 |
| DR Sarah Maxwell Ltd | Health & social care | 2024 |
| DR Steven Allen Ltd | Health & social care | 2011 |
| DR T J Edwards Ltd | Health & social care | 2017 |
| DR T Wong Limited | Health & social care | 2009 |
| DR T. Wong Holdings Ltd | Financial services | 2024 |
| DR TOM Peck Ltd | Health & social care | 2011 |
| DR. Mary Lynch Limited | Health & social care | 2003 |
| DR. William TEH Limited | Health & social care | 2004 |
| DR02FOX Ltd | Health & social care | 2011 |
| Dragon House Food Ltd | Hospitality | 2025 |
| Drain Wise Pumps Lincoln Ltd | Administrative & support | 2021 |
| Drain Wise Waste Solutions Limited | Administrative & support | 2009 |
| Drainco Building and Civils Ltd | Construction | 2021 |
| Drake Medical Writing & Consultancy Limited | Professional & scientific | 2023 |
| Drawn Fresh Ltd | Information & communication | 2016 |
| Drawn Vision Limited | Administrative & support | 2007 |
| DRB Models Ltd | Arts & recreation | 2023 |
| DRB Training Solutions Limited | Administrative & support | 2020 |
| DRE Utilities Ltd | Construction | 2023 |
| Drew Property Services (Lincoln) Ltd | Construction | 2019 |
| Drewery Jones Ltd | Real estate | 2025 |
| Dril Ltd | Hospitality | 2020 |
| Drilling International Ltd | Construction | 2023 |
| Drilling Solutions International Limited | Mining & quarrying | 1993 |
| Drimal Limited | Other services | 2014 |
| Drink Wines Ltd | Wholesale & retail | 2025 |
| Drive UP Storage Walsall Ltd | Real estate | 2022 |
| Driver Express (Sussex) Limited | Transport & logistics | 2017 |
| DRIVING4YOU Ltd | Transport & logistics | 2026 |
| DRM Assets Limited | Real estate | 2020 |
| DRS Flooring Ltd | Construction | 2020 |
| Drury Manor Investments Limited | Real estate | 2022 |
| Dryden Joinery Limited | Construction | 2014 |
| Dryguard Insulation Ltd | Construction | 2025 |
| DS Carpets Limited | Wholesale & retail | 2003 |
| DS Empire Ltd | Wholesale & retail | 2021 |
| DS Lincs Properties Ltd | Real estate | 2022 |
| DS Windows & Doors (Lincoln) Limited | Construction | 2025 |
| DSK 25 Ltd | Administrative & support | 2025 |
| DSX Group Limited | Wholesale & retail | 2017 |
| DTL TV Limited | Information & communication | 2023 |
| Dual Fuel Domestic Limited | Construction | 2018 |
| DUB BE Good Ltd | Professional & scientific | 2008 |
| Duckitt Developments Limited | Construction | 2026 |
| Dudley Consulting (Hull) Limited | Professional & scientific | 2015 |
| Dumi Siwo Limited | Arts & recreation | 2021 |
| Dunford Driving Solutions Limited | Other services | 2025 |
| Dunne Plunket Ltd | Health & social care | 2024 |
| Duoview Properties Limited | Construction | 1982 |
| Duplex Installations Ltd | Construction | 2019 |
| Durham Holdings (Lincoln) Limited | Financial services | 2022 |
| Durnaford Ltd | Information & communication | 2014 |
| Dusxhome Limited | Wholesale & retail | 2020 |
| Dutton Surveys Ltd | Other services | 1998 |
| Dutyofcareuk Limited | Education | 2026 |