| Easychecker MED Ltd | Other services | 2024 |
| Easycopiers Holdings Limited | Financial services | 2019 |
| Easycopiers Limited | Administrative & support | 2019 |
| Easyfix GAS and Plumbing Ltd | Manufacturing | 2025 |
| Easylife Technologies Ltd | Information & communication | 2025 |
| Easynest Furnishings Ltd | Wholesale & retail | 2026 |
| EAT 1ST Ltd | Information & communication | 2022 |
| EAT and Meet Limited | Hospitality | 2025 |
| EAT Homecooked Limited | Other services | 2018 |
| Eaton Mill Nursery and OUT of School Day Care Ltd | Education | 2006 |
| Eaton Mores Limited | Information & communication | 2013 |
| Eazy Trans Global Ltd | Financial services | 2025 |
| EB Academy Limited | Arts & recreation | 2018 |
| EB Moss Accountancy Limited | Professional & scientific | 2022 |
| Eb's Catering Ltd | Hospitality | 2018 |
| Ebbs Elite Coaching Ltd | Education | 2024 |
| Ebcon Ltd | Wholesale & retail | 2025 |
| Ebeaut Limited | Health & social care | 2025 |
| Ebenezer Adamtey Company Ltd | Health & social care | 2018 |
| Ebenezer Portfolio Management Services Limited | Real estate | 2019 |
| Ebenezer Recruitment Limited | Health & social care | 2015 |
| EBI Transfers Ltd | Transport & logistics | 2022 |
| EBJ Aviation Limited | Manufacturing | 2022 |
| EBM Strategy Ltd | Professional & scientific | 2025 |
| Ebony Chance Beauty Ltd | Wholesale & retail | 2023 |
| Ebox (Realisations) 2021 Limited | Education | 2017 |
| EBS Accountancy Consultants Ltd | Professional & scientific | 2013 |
| EBS Capital Resources Ltd | Other services | 2015 |
| EBS Consultants Ltd | Administrative & support | 2016 |
| EBS Management Services Ltd | Administrative & support | 2019 |
| EBS Mobile Phones Limited | Wholesale & retail | 1998 |
| EBS Properties Group Ltd | Real estate | 2015 |
| EBS Telecom Solutions Limited | Extraterritorial | 2014 |
| Ebten Ltd | Information & communication | 2012 |
| EBY Investment Ltd | Real estate | 2022 |
| EC2 Invest LLP | | 2015 |
| Ecarg Investments Ltd | Real estate | 2016 |
| Eccentric O Ltd | Arts & recreation | 2010 |
| Ecclesia Generation Community Interest Company | Hospitality | 2014 |
| Ecclestone Commercials Ltd | Wholesale & retail | 2019 |
| Ecco Estate Management Ltd | Administrative & support | 2019 |
| ECE Interior Design and Consultancy Ltd | Professional & scientific | 2021 |
| Ecguard Ltd | Other services | 2024 |
| Echo 80 Limited | Information & communication | 2011 |
| Echo FOX Limited | Other services | 2003 |
| Echostar UK Holdings Limited | Professional & scientific | 1999 |
| Eckler UK Limited | Financial services | 2021 |
| ECL Howard Watson Smith LLP | | 2008 |
| Eclectic IT Services Ltd | Information & communication | 2012 |
| Eclipse Global Fishing Limited | Wholesale & retail | 2025 |
| Eclipse Power Distribution Limited | Energy | 1992 |
| Eclipse Power Limited | Energy | 2015 |
| Eclipse Power Networks Limited | Energy | 2015 |
| Eclipse Power Optimise Future Point Limited | Energy | 2025 |
| Eclipse Power Optimise Limited | Construction | 2024 |
| Eclipse Power Optimise Thornwood Limited | Energy | 2025 |
| Eclipse Power Solutions Ltd | Administrative & support | 2023 |
| Eclipse Power Transmission Limited | Energy | 2015 |
| Eclipse Ventures Ltd | Wholesale & retail | 2025 |
| Eclosix Holdings Limited | Wholesale & retail | 2025 |
| Eclosix Limited | Wholesale & retail | 2024 |
| Eco 4 Energy Support Ltd | Other services | 2024 |
| Eco Clean CMK Ltd | Other services | 2016 |
| Eco Clean Shenley Ltd | Other services | 2016 |
| Eco Design Consultants Limited | Professional & scientific | 2008 |
| Eco Firm Limited | Information & communication | 2015 |
| Eco Friendly Products Limited | Wholesale & retail | 2025 |
| Eco Glowgadget Ltd | Wholesale & retail | 2024 |
| Eco Internationl Ltd | Wholesale & retail | 2026 |
| Eco Mechanical Services Limited | Construction | 1998 |
| Eco Plumb & GAS Limited | Construction | 2014 |
| Eco Real Insulation Ltd | Construction | 2023 |
| Eco Recycle & Export Ltd | Water & waste | 2025 |
| Ecoglowsolution Ltd | Real estate | 2025 |
| Ecogreen & O5LINK Ltd | Professional & scientific | 2019 |
| Ecogrid Energy Systems Ltd | Construction | 2026 |
| Ecoluxgb Limited | Administrative & support | 2017 |
| Ecom Distribution Ltd | Wholesale & retail | 2019 |
| Ecom Wear Ltd | Wholesale & retail | 2024 |
| Ecomexplorer Ltd | Wholesale & retail | 2025 |
| Ecommerce 360 Limited | Wholesale & retail | 2019 |
| Ecommerce Link Ltd | Wholesale & retail | 2025 |
| Ecomony Limited | Financial services | 2025 |
| Ecorg Ltd | Agriculture & fishing | 2025 |
| Ecoscape & Removals Solutions Limited | Construction | 2023 |
| Ecoshine Valet Ltd | Wholesale & retail | 2025 |
| Ecosmart Fit Ltd | Construction | 2011 |
| Ecosparkles by Seth Ltd. | Administrative & support | 2025 |
| Ecospeed Marine Ltd | Administrative & support | 2012 |
| Ecostar Services Ltd | Financial services | 2018 |
| Ecotextura Ltd | Wholesale & retail | 2019 |
| Ecotherm Heating & Energy Solutions Ltd | Construction | 2025 |
| Ecountify Limited | Professional & scientific | 2022 |
| Ecov-Holding Ltd | Wholesale & retail | 2024 |
| Ecovillageclub Ltd | Construction | 2023 |
| Ecowrap Ltd | Administrative & support | 2024 |
| Ecustomersolutions Limited | Information & communication | 2011 |
| ED & M Limited | Real estate | 2024 |
| ED Art Creations Ltd | Administrative & support | 2025 |
| ED Courier Ltd | Transport & logistics | 2019 |