| Elave Apothecary Limited | Wholesale & retail | 2026 |
| Elbe Consulting Ltd | Professional & scientific | 2014 |
| ELC Logistics Ltd | Real estate | 2017 |
| Elconpa Limited | Professional & scientific | 2024 |
| Elder Tree Records C.I.C. | Information & communication | 2026 |
| Eldjotnar Ltd | Wholesale & retail | 2023 |
| Eleador Consultants Limited | Wholesale & retail | 2017 |
| Electra Power Limited | | 1991 |
| Electrac Limited | Manufacturing | 2016 |
| Electric Air Ltd | Manufacturing | 2015 |
| Electric Fires NI Ltd | Wholesale & retail | 2016 |
| Electric Gates N.I. Limited | Other services | 2025 |
| Electrical & Allied Distributors (N.I.) Limited | Wholesale & retail | 2009 |
| Electrical Installation Specialists Ltd | Construction | 2024 |
| Electrical Sales & Distribution Company Limited | Other services | 2003 |
| Electrical Technologies Ltd | Manufacturing | 2025 |
| Electrical Universe Ltd | Wholesale & retail | 2017 |
| Electrician Local NI Ltd | Construction | 2025 |
| Electro Fashion Ltd | Wholesale & retail | 2024 |
| Electro Rayma UK Limited | Construction | 2025 |
| Electrofencing Systems Limited | Agriculture & fishing | 2000 |
| Electrohome Innovations Ltd | Manufacturing | 2024 |
| Electronic Automation Engineers Ltd | Manufacturing | 2008 |
| Electrus Generation Ltd | Energy | 2024 |
| Electrus Wind Farm 1 Ltd | Energy | 2024 |
| Elegance CUT Ltd | Manufacturing | 2024 |
| Elegance Nail & Spa UK Limited | Other services | 2024 |
| Elegantofficial Ltd | Wholesale & retail | 2025 |
| Element Pictures Television Limited | Administrative & support | 2017 |
| Element Training Limited | Education | 2008 |
| ELEMENT94 Ltd | Wholesale & retail | 2023 |
| Elemental Contract Consultants Limited | Professional & scientific | 2013 |
| Elements Belfast Limited | Hospitality | 2024 |
| Elements Takeaway Belfast Ltd | Hospitality | 2022 |
| Elena Gray Ltd | Wholesale & retail | 2025 |
| ELEV8 Consultancy Services Ltd | Professional & scientific | 2025 |
| Elevare Leadership Solutions Limited | Professional & scientific | 2024 |
| Elevate Dental Designs Limited | Health & social care | 2019 |
| Elevate Education & Training CIC | Education | 2024 |
| Elevate People Partners Limited | Administrative & support | 2024 |
| Elevate Systems Limited | Wholesale & retail | 2024 |
| Elevated Imaging Systems Limited | Professional & scientific | 2021 |
| Elevateo Co Ltd | Information & communication | 2025 |
| Elevator Promotional Marketing Ltd | Professional & scientific | 1994 |
| Eleven Jubilee Avenue Management Company Limited | Households | 2005 |
| ELF Ventures Ltd | Professional & scientific | 2021 |
| Elfmac Holding Limited | Financial services | 2020 |
| Elgary Limited | Transport & logistics | 2018 |
| Eliassen (NI) Limited | Information & communication | 2012 |
| Elijah Music Limited | Arts & recreation | 2003 |
| Elimah Food Ltd | Hospitality | 2026 |
| Elin Limited | Extraterritorial | 2019 |
| Elisdha DSH Ltd | Wholesale & retail | 2023 |
| Elite 4 Trading & Grading Ltd | Wholesale & retail | 2025 |
| Elite Asbestos Limited | Construction | 2025 |
| Elite Bathroom Solutions Limited | Construction | 2019 |
| Elite Clean & Maintenance Ltd | Administrative & support | 2021 |
| Elite Doors Limited | Manufacturing | 2001 |
| Elite Dwells Ltd | Real estate | 2025 |
| Elite Exteriors Ltd | Administrative & support | 2026 |
| Elite Fit Belfast Ltd | Health & social care | 2018 |
| Elite Garage Doors (N.I.) Limited | Manufacturing | 2018 |
| Elite Hereford Breeders Ltd | Other services | 2015 |
| Elite Holdings 32 Limited | Real estate | 2025 |
| Elite Irish Transfers Ltd | Transport & logistics | 2024 |
| Elite Janitorial Services Limited | Administrative & support | 2020 |
| Elite Lifts Ltd | Construction | 2011 |
| Elite Mart Ltd | Wholesale & retail | 2026 |
| Elite Populi Limited | Financial services | 2022 |
| Elite Property Care 32 Limited | Construction | 2025 |
| Elite Respire CIC | Health & social care | 2026 |
| Elite Rooms Belfast Ltd | Hospitality | 2020 |
| Elite Services Security & Facilities Management Ltd | Administrative & support | 2014 |
| Elite Vehicle Hire Ltd | Administrative & support | 2025 |
| Elite Window Cleaning Services Ltd | Administrative & support | 2014 |
| Elizabeth O’Neill Limited | Education | 2025 |
| Elizabeth Watt Dance Ltd | Arts & recreation | 2017 |
| ELK Property Rentals Ltd | Real estate | 2012 |
| ELK Studios Ltd | Information & communication | 2017 |
| Elkashif Medical Ltd | Health & social care | 2025 |
| Elkstone Capital Partners (NI) Limited | Financial services | 2024 |
| Ellan Property Ltd | Real estate | 2020 |
| Ellantec Limited | Information & communication | 2022 |
| Elle Marketing NI Ltd | Professional & scientific | 2025 |
| Ellie Lilley Limited | Wholesale & retail | 2024 |
| Elliott Capital Holdings NI Ltd | Professional & scientific | 2026 |
| Elliott Construction Materials Ltd | Wholesale & retail | 2023 |
| Elliott Ozan Properties Ltd | Real estate | 2024 |
| Elliott Plumb-Elect Ltd | Construction | 2014 |
| Elliotts (Hire Service) Limited | Wholesale & retail | 1936 |
| Elliotts Legal LLP | | 2018 |
| Ellipal Limited | Manufacturing | 2024 |
| Ellis's Law Searchers Ltd | Professional & scientific | 2008 |
| Ellison Bros.(Wholesale Jewellers) Belfast Limited | Wholesale & retail | 1975 |
| Ellison Trading Ltd | Wholesale & retail | 2025 |
| ELM Court (N.I.) Limited | Extraterritorial | 1986 |
| ELM Prowrite Consultancy Ltd | Other services | 2018 |
| Elmao Management Ltd | Real estate | 2025 |
| Elmasria-Egy-Pharm Ltd | Manufacturing | 2025 |
| Elmburn Limited | Real estate | 2015 |