| DEL Ophthalmics Ltd | Wholesale & retail | 2025 |
| DEL Property Ltd | Real estate | 2013 |
| Del-Tech Logistics Ltd | Transport & logistics | 2017 |
| Delamer Clinic Limited | Wholesale & retail | 2025 |
| Delamere Construction Ltd | Construction | 2017 |
| Delamere Enterprises Limited | Wholesale & retail | 2018 |
| Delamere Properties (UK) Limited | Real estate | 2006 |
| Delaney & Bourton Ltd | Administrative & support | 2018 |
| Delaxnet Ltd | Information & communication | 2016 |
| Delay Properties Limited | Real estate | 2020 |
| Delbury Consulting Limited | Professional & scientific | 2026 |
| Delcam Limited | Information & communication | 1988 |
| Delconsulting Limited | Information & communication | 1998 |
| Delcrown Limited | Professional & scientific | 2009 |
| Dele IWA Limited | Health & social care | 2016 |
| Delectable Moments Ltd | Wholesale & retail | 2023 |
| Deleena Ltd | Health & social care | 2015 |
| Delegata Limited | Wholesale & retail | 2024 |
| Delemere Consultancy Limited | Professional & scientific | 2026 |
| Delex Ltd | Transport & logistics | 2022 |
| Deleyon Patrick Smith Ltd | Extraterritorial | 2025 |
| Delhi KI Handi Ltd | Other services | 2019 |
| DELI7 Limited | Hospitality | 2025 |
| Delicacy Ltd | Wholesale & retail | 2025 |
| Delicate Cuisine Ltd | Hospitality | 2025 |
| Delicatessen Takeaway Ltd | Hospitality | 2025 |
| Delice & Co. Ltd | Hospitality | 2025 |
| Delicia Catering Ltd | Hospitality | 2015 |
| Delicimaa Ltd | Manufacturing | 2026 |
| Delicious Consulting Ltd | Professional & scientific | 2022 |
| Delicious Delicatessen Ltd | Hospitality | 2024 |
| Delicious PR Limited | Administrative & support | 2011 |
| Delieverd by Burns Ltd | Transport & logistics | 2025 |
| Delight Dairies Ltd | Wholesale & retail | 2023 |
| Delight Developments Ltd | Real estate | 2026 |
| Delight Dönner Kebab and Pizza House Ltd | Hospitality | 2025 |
| Delight Essential Services UK Limited | Administrative & support | 2013 |
| Delight Foods (UK) Ltd | Wholesale & retail | 2005 |
| Delight Group Incorporated Limited | Information & communication | 2018 |
| Delight Print Ltd | Manufacturing | 2021 |
| Delight PT Ltd | Hospitality | 2024 |
| Delight Security Limited | Administrative & support | 2022 |
| Delightbnb Ltd | Hospitality | 2025 |
| Delightful Care Limited | Health & social care | 2012 |
| Delilah's Dressing Room Limited | Wholesale & retail | 2019 |
| Deliu Construction Limited | Construction | 2019 |
| Deliu Real Estate Property Limited | Real estate | 2025 |
| Deliver a Smile | Administrative & support | 2018 |
| Deliver at Your Door Limited | Hospitality | 2024 |
| DELIVER2UK Co Limited | Real estate | 2020 |
| Delivercart Ltd | Hospitality | 2020 |
| Delivering Efficiency for Transport 153 Limited | Professional & scientific | 2020 |
| Delivery Door to Door Ltd | Hospitality | 2016 |
| Delivery Driver Ltd | Transport & logistics | 2025 |
| Delivery Dynamo Ltd | Transport & logistics | 2024 |
| Delivery Express Logistics Properties Ltd | Real estate | 2015 |
| Delivery I Limited | Financial services | 2019 |
| Delivery Kings Ltd | Transport & logistics | 2025 |
| Delivery Rapid Drivers Ltd | Transport & logistics | 2026 |
| Delkinz Limited | Wholesale & retail | 2021 |
| Delko Limited | Wholesale & retail | 2017 |
| Dell Refrigeration & Air Conditioning Services Ltd | Other services | 2007 |
| Dell Supermarket Ltd | Wholesale & retail | 2025 |
| Della Transportations Ltd | Transport & logistics | 2025 |
| Dellawashe Ltd | Health & social care | 2015 |
| Dellect Ltd | Transport & logistics | 2022 |
| Deller Investment Holdings Ltd | Financial services | 2025 |
| Dellfox Design Studio Ltd | Real estate | 2021 |
| Dellfox Technologies Ltd. | Information & communication | 2016 |
| Delly's Van Company Ltd | Transport & logistics | 2025 |
| Dellyn Real Estate Inc. Limited | Professional & scientific | 2003 |
| Delmatch Staffing Ltd | Administrative & support | 2025 |
| Delmate Transport Ltd | Transport & logistics | 2025 |
| Delon Recruitment Ltd | Administrative & support | 2019 |
| Delph Crash Repair Centre Ltd | Wholesale & retail | 2021 |
| Delphis Property Limited | Real estate | 2021 |
| Delta 4 Nationwide Ltd | Administrative & support | 2019 |
| Delta Aquarium Limited | Other services | 2014 |
| Delta Consultancy Ltd | Professional & scientific | 2026 |
| Delta DEV Limited | Information & communication | 2021 |
| Delta Foodies Ltd | Hospitality | 2023 |
| Delta G Limited | Manufacturing | 2022 |
| Delta Healthcare Services Ltd | Wholesale & retail | 2023 |
| Delta Heating Ltd | Construction | 2024 |
| Delta Medical Ltd | Health & social care | 2015 |
| Delta Nottingham Opco Limited | Hospitality | 2025 |
| Delta Pack Ltd | Manufacturing | 2011 |
| Delta Q Holdings Ltd | Financial services | 2025 |
| Delta Rise Properties Limited | Real estate | 2025 |
| Delta Wines Ltd | Wholesale & retail | 2023 |
| Deltacom Ltd | Information & communication | 2017 |
| Deltatec Ltd | Other services | 2016 |
| Deltech Electronics Ltd | Manufacturing | 2025 |
| Delton Traders Ltd | Wholesale & retail | 2014 |
| Deltuxe Ltd | Wholesale & retail | 2025 |
| Deluscious Delights Limited | Manufacturing | 2026 |
| Delux Bathrooms Limited | Construction | 2013 |
| Delux Housing Ltd | Real estate | 2026 |
| Delux Motor Spares Ltd | Wholesale & retail | 2023 |
| Delux Trading Ltd | Construction | 2023 |