| Ecommerce Golf Club Limited | Nottingham | 2023 |
| Ecommors Limited | Chelmsford | 2023 |
| Ecomulch Limited | Burnley | 2012 |
| Econ Blue Limited | Cardiff | 2013 |
| Econ Construction Limited | Sidcup | 2019 |
| Econ Recycling Limited | Cardiff | 2012 |
| Econo-Batt Limited | Brighton | 2009 |
| Econo-Pack Limited | Brighton | 2009 |
| Economic and General Secretariat Limited | London | 1950 |
| Economic Solutions Limited | Manchester | 2017 |
| Economist Services Europe Limited | Egham | 2017 |
| Economy Cleaning Limited | Swansea | 2023 |
| Economy EV Limited | Swansea | 2023 |
| Econova Europe Ltd | Manchester | 2025 |
| Econumy Capital Ltd | Gerrards Cross | 2012 |
| Ecopig Ltd | London | 2023 |
| Ecoproactive Limited | Glasgow | 2016 |
| Ecoreaders Limited | Stoke Prior | 2020 |
| Ecorender One Ltd | Barnsley | 2024 |
| Ecoright Ltd | Reading | 2021 |
| Ecosafe Driving School Limited | Sheffield | 2010 |
| Ecosalt Limited | Sutton Coldfield | 2024 |
| Ecosaveonline Ltd | Cirencester | 2009 |
| Ecoscape International Limited | Arnold | 2015 |
| Ecoscheme Limited | Gainsborough | 2011 |
| Ecosmart Mechanical and Electrical Services Ltd | Matlock | 2017 |
| Ecosmiths Ltd | Hartley Wintney | 2025 |
| Ecosmos Solutions (UK) Limited | London | 2022 |
| Ecosort Limited | Reading | 2020 |
| Ecosphere Renewables Limited | Hove | 2023 |
| Ecosse (Victoria Terrace) Management Services Ltd | Limavady | 2003 |
| Ecosse Automotive Limited | Bo'Ness | 2013 |
| Ecosse Property Development Ltd | Ascot | 2024 |
| Ecosteam Clean Ltd | Riding Mill | 2024 |
| Ecostep Consulting Ltd | Northampton | 2012 |
| Ecosurety Scotland Limited | Glasgow | 2015 |
| Ecosyl Products Limited | Royston | 1996 |
| Ecotech Oven & Carpet Cleaning Limited | Dunstable | 2013 |
| Ecotech Renewables Ltd | Gosport | 2023 |
| Ecotech Windows Limited | Barnsley | 2012 |
| Ecotricity (Sparsholt Gasmill) Limited | Stroud | 2017 |
| Ecovate Group Limited | Harrow | 2019 |
| Ecovert FM Limited | Newcastle Upon Tyne | 2012 |
| Ecovo Arboriculture Limited | Woking | 2023 |
| Ecowas Restaurant and Lounge Limited | London Peckham | 2023 |
| Ecowood Limited | Southampton | 2009 |
| ECR Management Ltd | Edinburgh | 2015 |
| Ecron Ltd | South Croydon | 2014 |
| Ecrown Limited | Middlesex | 2014 |
| ECS Art & Craft Co., Ltd. | Beckenham | 2015 |
| ECS Automotive UK Limited | Ipswich | 2012 |
| ECS Property Management Limited | Doncaster | 2015 |
| ECS Property Nominees Limited | London | 2018 |
| Ecstasy Foundation | East Sussex | 2006 |
| Ecurie Esprit Limited | Stratford-Upon-Avon | 2013 |
| Ecycle Direct Limited | Bristol | 2021 |
| Ecycleuk Limited | Bristol | 2020 |
| ED JON Ltd | South Woodford | 2014 |
| Ed&Care Limited | Bradford | 2022 |
| Ed's Easy Diner Limited | Birmingham | 1987 |
| ED3S Limited | Waltham Cross | 2001 |
| Edabo Ltd | London | 2023 |
| Edala Ltd | Dagenham | 2021 |
| Edan Invest Norway Limited | London | 2022 |
| Edan Norway Limited | London | 2022 |
| Edap Ltd | Chelmsford | 2020 |
| Edaphon S-Oil TEC Ltd | Ballycastle | 2007 |
| Edau Sewing Room Ltd | Pontypool | 2021 |
| Edcas Ltd | Wrexham | 2024 |
| EDD1E Limited | Harrogate | 2020 |
| Eddie Brown Coaches Limited | Scruton | 2014 |
| Eddie Ltd | Bedford | 2020 |
| Eddie Rabaiotti and Sons Limited | Porthcawl | 2015 |
| Eddie Stobart Distribution Limited | Warrington | 2019 |
| Eddington Consultancy Ltd | London | 1994 |
| Eddingtons Holdings Limited | Hungerford | 2012 |
| Eddleston Ltd | Tyne And Wear | 2003 |
| Eddna J. Limited | Waltham Cross | 2009 |
| Eddtoma Holdings Limited | Huntingdon | 2021 |
| Eddy Rail Ltd | London | 2014 |
| Eddy Speed Limited | Luton | 2025 |
| Edellico Limited | London | 2021 |
| Edelweiss (Europe) Ltd | Birmingham | 2013 |
| Edelweiss TR Ltd | London | 2023 |
| Eden & Paris Ltd. | London | 2012 |
| Eden (North West) Limited | Liverpool | 2011 |
| Eden 2018 Limited | Reading | 2017 |
| Eden AA Limited | London | 2019 |
| Eden Avenue Management Company Limited | Newry | 2022 |
| Eden Chaser Ltd | Mildenhall | 2011 |
| Eden Company Secretaries Ltd | Poole | 2013 |
| Eden Cumbria Ltd. | Penrith | 1993 |
| Eden Goods Ltd | Teddington | 2020 |
| Eden Grove Hotel Management Ltd | Cardiff | 2018 |
| Eden Holdings North West Ltd | Liverpool | 2014 |
| Eden Land & Property Sourcing Ltd | London | 2020 |
| Eden Midcalf Limited | Stourbridge, West Midlands | 2020 |
| Eden Mill ST Andrews Ltd | St. Andrews | 2016 |
| Eden Motor Retail (Wokingham) Limited | Reading | 1953 |
| Eden Nova Projects Ltd | Manchester | 2024 |