| Digital Littorals Ltd | Information & communication | 2021 |
| Digital Marketing Geek Ltd | Professional & scientific | 2025 |
| Digital Media Group Holdings Ltd | Financial services | 2026 |
| Digital MFG Limited | Professional & scientific | 2026 |
| Digital Money KIT Ltd | Professional & scientific | 2025 |
| Digital Property Holdings Ltd | Real estate | 2026 |
| Digital Skills Exchange Ltd | Education | 2026 |
| Digital Source Ltd | Information & communication | 2014 |
| Digital Spires Ltd | Information & communication | 2019 |
| Digital Tacs Ltd | Professional & scientific | 2021 |
| Digital Trent Ltd | Information & communication | 2026 |
| Digitally Charged Limited | Information & communication | 2017 |
| Digitalmediapartneruk Ltd | Information & communication | 2020 |
| Digitalnetstore Limited | Information & communication | 2026 |
| Digitel Games Ltd | Information & communication | 2026 |
| Digitery Mart Ltd | Wholesale & retail | 2025 |
| Dignified Services Limited | Wholesale & retail | 2020 |
| Dignified UK Services Ltd | Wholesale & retail | 2024 |
| Digs "4" U Ltd. | Real estate | 1998 |
| Diju Limited | Wholesale & retail | 2012 |
| Dikhumo Limited | Health & social care | 2025 |
| Dikito Limited | Administrative & support | 2015 |
| Dilict Limited | Hospitality | 2023 |
| Diligent Property Solutions Limited | Construction | 2012 |
| Diligentia Safety Ltd | Professional & scientific | 2018 |
| Dilip Enterprises Limited | Wholesale & retail | 2003 |
| Dilisys Limited | Information & communication | 2015 |
| Dilma Freeholds Ltd | Real estate | 2021 |
| Dilmun Investments Ltd | Real estate | 2023 |
| Dils Bodywork Specialist Ltd | Wholesale & retail | 2017 |
| Dils Bodywork Specialists (EM) Ltd | Wholesale & retail | 2022 |
| Dilyca Limited | Real estate | 2018 |
| Dimanche Clothing Limited | Health & social care | 2024 |
| Dimbakhuni Limited | Health & social care | 2018 |
| Dimension 2 Ltd | Information & communication | 2011 |
| Dimension Building Services Ltd | Construction | 2013 |
| Dimilta & Jones Consulting Ltd | Professional & scientific | 2017 |
| Dimitri's Detailing Ltd | Administrative & support | 2025 |
| Dimitrios Patsiamanidis Limited | Health & social care | 2014 |
| Dimitrios Sourtzis Limited | Health & social care | 2020 |
| Dimm Ltd | Construction | 2020 |
| Dimplex Developments Ltd | Construction | 2013 |
| Dimpz Productions Ltd | Information & communication | 2026 |
| Dinacca Limited | Information & communication | 2017 |
| Dinbate Properties Limited | Real estate | 2025 |
| Dine-Inn Limited | Hospitality | 2020 |
| Dinesimla Ltd | Hospitality | 2019 |
| Dineswift Limited | Information & communication | 2024 |
| Dingia Properties Ltd | Real estate | 2019 |
| Dingwall Enterprises Ltd | Health & social care | 2010 |
| Dinhodoskie Ltd | Hospitality | 2025 |
| Dining Alfresco Ltd | Hospitality | 2022 |
| Dink Consultants Limited | Professional & scientific | 2021 |
| Dinky Dino's Limited | Arts & recreation | 2016 |
| Dinkydoodle Designs Ltd | Professional & scientific | 2012 |
| Dino (Nottingham) Limited | Hospitality | 2016 |
| Dino Labbate Projects Limited | Financial services | 2012 |
| Dinobot Island Toys Ltd | Wholesale & retail | 2021 |
| Dinos Pizza (Nottm) Ltd | Hospitality | 2024 |
| Dinos Pizza (Notts) Limited | Hospitality | 2019 |
| Dinsell Caunt Enterprises Limited | Information & communication | 2022 |
| Dinson Accountants Limited | Professional & scientific | 2020 |
| Diollo Limited | Construction | 2020 |
| Dionysian Consultants Limited | Wholesale & retail | 2017 |
| Dionysos Greek Restaurant Ltd | Hospitality | 2001 |
| Diorr Door to Door Ltd | Health & social care | 2025 |
| DIP N Clip Ltd | Other services | 2016 |
| Dipali Restaurants Limited | Hospitality | 1994 |
| Dipsett Trading Ltd | Wholesale & retail | 2024 |
| Dipti Constructions Ltd | Construction | 2024 |
| DIR Maintenance Service Ltd | Construction | 2026 |
| Direct (FLT) Training Limited | Transport & logistics | 2016 |
| Direct Auto MOT Centre Ltd | Wholesale & retail | 2016 |
| Direct Auto Property Limited | Real estate | 2022 |
| Direct Auto Repairs Ltd | Wholesale & retail | 2011 |
| Direct Couriers UK Ltd | Transport & logistics | 2024 |
| Direct Educational Furniture Ltd | Administrative & support | 2009 |
| Direct FLT Training Services Ltd | Administrative & support | 2019 |
| Direct Flues Limited | Wholesale & retail | 2013 |
| Direct Hire and Sales Limited | Administrative & support | 2005 |
| Direct Housewares Solutions Ltd | Wholesale & retail | 2020 |
| Direct Infrastructure Ltd | Construction | 2018 |
| Direct Land Investments Limited | Construction | 2017 |
| Direct Salvage Ltd | Wholesale & retail | 2023 |
| Direct Sameday Services (NW) Limited | Transport & logistics | 2007 |
| Direct Sameday Services Limited | Transport & logistics | 2002 |
| Direct Sameday Vehicle Hire Limited | Administrative & support | 2004 |
| Direct Wheel Alignment Services Ltd | Wholesale & retail | 2017 |
| Directbase Limited | Transport & logistics | 2004 |
| Directbyte Limited | Real estate | 1998 |
| Director KAY Enterprises Limited | Financial services | 2022 |
| DIRECTPHYSIO4U Limited | Health & social care | 2020 |
| Dirty BIT Media Ltd | Information & communication | 2015 |
| Dirty Chicken Limited | Hospitality | 2023 |
| Dirty Jobs Ltd | Administrative & support | 2018 |
| Dirty Windows Limited | Administrative & support | 2025 |
| DIS Consultants Ltd | Professional & scientific | 2012 |
| Disability Action Champions CIC | Hospitality | 2018 |
| Disability Support Ltd | Information & communication | 2014 |
| Disabled Divers International Limited | Education | 2010 |