| Exclusively DIY Limited | Extraterritorial | 2001 |
| Exclusively Housewares Limited | Extraterritorial | 2000 |
| Exclusively Unique (Birmingham) Ltd | Other services | 2024 |
| Exclusivemotorsportdevelopments Ltd | Wholesale & retail | 2021 |
| Execcorp Limited | Transport & logistics | 2017 |
| Execur Ltd | Wholesale & retail | 2018 |
| Execution Corporation Ltd | Wholesale & retail | 2025 |
| Executive & Co Stays Ltd | Real estate | 2026 |
| Executive Abode Management LLP | | 2020 |
| Executive Access Services Ltd | Transport & logistics | 2024 |
| Executive Chauffeur Service Bham Limited | Transport & logistics | 2026 |
| Executive Foods Ltd | Hospitality | 2016 |
| Executive Function LAB Adhd Limited | Health & social care | 2025 |
| Executive Home Secured Limited | Real estate | 2025 |
| Executive Linen Hire Limited | Hospitality | 2005 |
| Executive Luxury Cars Ltd | Wholesale & retail | 2019 |
| Executive New Homes Ltd | Construction | 2021 |
| Executive Physical Therapy Ltd | Other services | 2025 |
| Executive Recruiting Ltd | Administrative & support | 2023 |
| Executive Resource Group Limited | Administrative & support | 2021 |
| Executive Travel Solutions Ltd | Other services | 2017 |
| Exel Healthcare Ltd | Health & social care | 2010 |
| Exelliq UK Limited | Manufacturing | 2019 |
| Exeltis UK Limited | Wholesale & retail | 2013 |
| Exeltra Engineering Services Ltd | Construction | 2025 |
| Exercism | Information & communication | 2018 |
| Exesto Limited | Professional & scientific | 2018 |
| Exeter Gateway Management Company Limited | Real estate | 2022 |
| Exeter Kitchen Limited | Hospitality | 2023 |
| Exford Drive Management Company Limited | Households | 2014 |
| Exhale Conscious Bar CIC | Education | 2024 |
| Exhale Nutrition Ltd | Health & social care | 2021 |
| Exhale Sheeshateria Limited | Hospitality | 2007 |
| Exhale Shisha Ltd | Wholesale & retail | 2013 |
| Exhall Gardens (Coventry) Management Company Limited | Households | 2021 |
| Exhall Meadows (Coventry) Management Company Limited | Households | 2023 |
| Exhibition and Event Carpeting Limited | Wholesale & retail | 2011 |
| Exhibition Carpets Limited | Wholesale & retail | 2015 |
| Exhibition House London Limited | Arts & recreation | 2025 |
| Exhol Ltd | Information & communication | 2016 |
| Exiio Limited | Information & communication | 2009 |
| Exim Global Limited | Wholesale & retail | 2015 |
| Existenz Minima Ltd | Wholesale & retail | 2016 |
| Exivi Limited | Construction | 2018 |
| Exley Pharmacy Ltd | Wholesale & retail | 2022 |
| Exng Ltd | Transport & logistics | 2016 |
| EXO Solutions Consulting Limited | Professional & scientific | 2025 |
| Exodus Midlands Limited | Real estate | 2018 |
| Exodus Partners Limited | Real estate | 2021 |
| Exolift Innovations Ltd | Professional & scientific | 2026 |
| Exon Security Ltd | Administrative & support | 2024 |
| Exora Global Education Limited | Information & communication | 2026 |
| Exora Ltd | Wholesale & retail | 2025 |
| Exotic Arabella Ltd | Wholesale & retail | 2019 |
| Exotic Foods ZAM Limited | Hospitality | 2025 |
| Exotic Rentals Ltd | Administrative & support | 2023 |
| Exozone Ltd | Wholesale & retail | 2025 |
| Expansive Music Academy Limited | Information & communication | 2021 |
| Expectations (UK) | Health & social care | 2012 |
| EXPEDITE1 Limited | Financial services | 2019 |
| Expedius Limited | Administrative & support | 2023 |
| Expedius Logistics Limited | Transport & logistics | 2017 |
| Expeedo Solutions Ltd | Wholesale & retail | 2025 |
| Expenses Done Ltd | Professional & scientific | 2024 |
| Experas Limited | Professional & scientific | 2014 |
| Experiences Travel Limited | Administrative & support | 2023 |
| Experiential Training and Learning Ltd | Education | 2017 |
| Experimental Spirits Limited | Manufacturing | 2019 |
| Experlo Group Ltd | Manufacturing | 2023 |
| Expert Cleaning & Maintenance Ltd | Administrative & support | 2012 |
| Expert Comparisons Ltd | Administrative & support | 2026 |
| Expert Consultants Ltd | Professional & scientific | 2024 |
| Expert Ease Training Ltd | Administrative & support | 2025 |
| Expert GP Services Ltd | Health & social care | 2025 |
| Expert Hear Services Limited | Health & social care | 2026 |
| Expert Learners Ltd | Education | 2024 |
| Expert Legal Services Ltd | Professional & scientific | 2013 |
| Expert Medical & Education Services Limited | Other services | 2018 |
| Expert Roofing Limited | Construction | 2024 |
| Expert Training Solutions Ltd | Information & communication | 2023 |
| Expert Witness Forensic Group Ltd | Professional & scientific | 2024 |
| Experteas Company Limited | Professional & scientific | 2012 |
| Expertise Immobilienconsult Limited | Administrative & support | 2008 |
| Expertwindowscleaning Ltd | Administrative & support | 2025 |
| Expilogix Limited | Transport & logistics | 2022 |
| Expio Finanz Limited | Administrative & support | 2008 |
| Explaize Limited | Information & communication | 2025 |
| Explicit Consultancy Ltd | Professional & scientific | 2020 |
| Explode Social Media Limited | Professional & scientific | 2017 |
| Explora Media Ltd | Professional & scientific | 2017 |
| Explore the Wonders UK Ltd | Administrative & support | 2023 |
| Exploremarket Ltd | Wholesale & retail | 2026 |
| Exploremind Ltd | Health & social care | 2019 |
| Explorify Ltd | Wholesale & retail | 2026 |
| Exploring English Whisky Ltd | Wholesale & retail | 2020 |
| Explosive Beatz Limited | Wholesale & retail | 2013 |
| Expo Hire UK Ltd | Transport & logistics | 2017 |
| Expo Transport Ltd | Transport & logistics | 2025 |
| Expo-Impo Company Limited | Wholesale & retail | 2001 |
| Expondo UK Limited | Wholesale & retail | 2021 |