| Dadg Limited | Transport & logistics | 2025 |
| Daily Bailey Ltd | Other services | 2021 |
| Daily Basket Express Ltd | Wholesale & retail | 2025 |
| Daines Royal Limited | Information & communication | 2025 |
| Dainton Doors Limited | Construction | 2020 |
| Dalcam Healthcare Ltd | Health & social care | 2023 |
| Damian Kelly Weddings Ltd | Information & communication | 2023 |
| DAMPPROOF1 Ltd | Construction | 2012 |
| Damson Business Consulting Limited | Professional & scientific | 2021 |
| DAN Pantea Transport Ltd | Transport & logistics | 2021 |
| Dangary Limited | Administrative & support | 2019 |
| Daniels Catering Ltd | Hospitality | 2026 |
| Danila Transport Limited | Transport & logistics | 2014 |
| Danish Social Care Ltd | Health & social care | 2019 |
| Dannstarr Electronics Ltd | Other services | 2020 |
| Danyserv Limited | Transport & logistics | 2013 |
| Darbas Limited | Transport & logistics | 2020 |
| Darbuild Energy Ltd | Construction | 2015 |
| Darius Ambrazaitis Ltd | Transport & logistics | 2017 |
| Darius Cemolonskas Ltd | Transport & logistics | 2022 |
| Dark Shepherd Films Ltd | Information & communication | 2025 |
| Darko Ventures Ltd | Real estate | 2022 |
| Darmay Trans Ltd | Transport & logistics | 2022 |
| DAS Trans (Lincs) Ltd | Transport & logistics | 2019 |
| DAS Transport Ltd | Transport & logistics | 2020 |
| Data Protection Network Associates Ltd | Professional & scientific | 2020 |
| Datamarch Ltd | Professional & scientific | 2026 |
| Datasound Consulting Limited | Information & communication | 2015 |
| Date-Inn Limited | Information & communication | 2025 |
| Dave Cook Engineering Limited | Manufacturing | 2011 |
| David Barber (Trade & Management) Limited | Construction | 2016 |
| David Bowman Pumpkins Limited | Agriculture & fishing | 2009 |
| David Cole Services Limited | Administrative & support | 2026 |
| David Munson Construction Limited | Construction | 2002 |
| Davis-Wright Aggregates Ltd | Construction | 2022 |
| Davis-Wright Haulage Ltd | Transport & logistics | 2020 |
| Davis-Wright Holdings Limited | Financial services | 2023 |
| Day WIN Ltd | Extraterritorial | 2016 |
| DB Fire Safety Limited | Professional & scientific | 2013 |
| DB Refinishing Ltd | Wholesale & retail | 2025 |
| DB Technical Designs Ltd | Professional & scientific | 2025 |
| DBE Gaming Ltd | Extraterritorial | 2022 |
| DBE Records Ltd | Extraterritorial | 2022 |
| Dblock Europe Ltd | Administrative & support | 2017 |
| Dblock Europe Production Ltd | Extraterritorial | 2022 |
| DBU Accounting Limited | Professional & scientific | 2012 |
| DC Home & Haul Ltd | Transport & logistics | 2023 |
| DC Spring Ltd | Wholesale & retail | 2024 |
| DCB Services Limited | Construction | 2018 |
| DCB Vision Ltd | Construction | 2024 |
| Dccateringservice Ltd | Hospitality | 2025 |
| DCF Builders Ltd | Construction | 2013 |
| DCR Trans Limited | Transport & logistics | 2018 |
| DCS Development Limited | Construction | 2008 |
| DCS Facilities Maintenance Ltd | Construction | 2019 |
| DCS Services (Lincs) Ltd | Construction | 2017 |
| DD K9 Limited | Administrative & support | 2017 |
| DE Gemini Services Ltd | Administrative & support | 2025 |
| DE Smith Property Maintenance Ltd | Construction | 2023 |
| Dealin Green Solutions Limited | Professional & scientific | 2025 |
| Deane Maintenance Ltd | Wholesale & retail | 2025 |
| Deda Trans Ltd | Transport & logistics | 2016 |
| Dedicated Roofing Ltd | Construction | 2020 |
| DEE and TEE (Spalding) Limited | Health & social care | 2025 |
| Deep Blue Obsidian Limited | Professional & scientific | 2016 |
| Deeping Car and Van Hire Ltd | Administrative & support | 2017 |
| Deeping Direct Limited | Other services | 2019 |
| Deeping Energy Limited | Construction | 2017 |
| Deeping Power Ltd | Manufacturing | 2021 |
| Dees Fish Bar (Bourne) Ltd | Hospitality | 2023 |
| Dees Fish Bar Limited | Wholesale & retail | 2009 |
| Deftcad Ltd | Professional & scientific | 2015 |
| Deima Ltd | Transport & logistics | 2019 |
| Deister Electronic (UK) Limited | Wholesale & retail | 1987 |
| Dejex Supplies Limited | Agriculture & fishing | 1981 |
| DEL TOM Services Ltd | Transport & logistics | 2026 |
| Delaney Car and Commercials Ltd | Wholesale & retail | 2026 |
| Delassus UK Limited | Extraterritorial | 1994 |
| Deli Market Limited | Wholesale & retail | 2026 |
| Deli Mini Market Ltd | Wholesale & retail | 2024 |
| Delivery Assured Limited | Professional & scientific | 2014 |
| Delta Maintenance Ltd | Construction | 2024 |
| Deluxe Roofing Ltd | Construction | 2017 |
| Demap Crane and Plant Solutions Ltd | Construction | 2010 |
| Demap Leisure Ltd | Agriculture & fishing | 2023 |
| DEN Property Company Limited | Real estate | 2021 |
| Denco Alliance Ltd | Construction | 2025 |
| Deniss Transport Ltd | Transport & logistics | 2017 |
| Dennis Couriers Ltd | Transport & logistics | 2021 |
| Dennis JEX & SON Limited | Manufacturing | 2007 |
| Dentone Builders Limited | Construction | 2007 |
| Departure Lounge Travel Limited | Administrative & support | 2009 |
| Dependable Roofing Ltd | Construction | 2021 |
| Derbyshire Roofing Ltd | Construction | 2024 |
| Dervensure Insurance Brokers Ltd | Financial services | 2006 |
| Destination Produce Limited | Wholesale & retail | 2023 |
| Devil's Fury Limited | Professional & scientific | 2025 |
| Devonshire Alliance (UK) Limited | Professional & scientific | 2020 |
| Devotional Home Improvements Ltd | Construction | 2025 |
| Devsec Operations Ltd | Information & communication | 2026 |