| ERA Group Norway Limited | London | 2024 |
| ERA Plastics Ltd | London | 2014 |
| Eraaconstruction Ltd | London | 2021 |
| Erasvital Ltd | Cheshire | 2013 |
| Eraun Metal Materials Limited | Beckenham | 2015 |
| ERB (UK) Ltd | Brentwood | 2003 |
| Erban Abode Property Solutions Limited | Southampton | 2023 |
| Erbay Properties Limited | Bromley | 2021 |
| Erbi Limited | Cambridge | 2009 |
| ERC Consulting Limited | London | 2021 |
| Ercall (ROL) Limited | Oswestry | 2020 |
| Ercetin Yachting Ltd | London | 2024 |
| Ercolina CML UK Ltd | Colchester | 2013 |
| Erde 2 Ltd | London | 2022 |
| Erdikler Limited | London | 2019 |
| Erdingtonconnect Ltd | Huddersfield | 2025 |
| Erebus (Developments) Ltd | Aylesbury | 2015 |
| Erect Direct Ltd | Wickford | 2015 |
| Erenoglu (UK) Ltd | London | 2014 |
| Eresia Limited | Oxford | 2005 |
| Erga Consulting Ltd | Birmingham | 2023 |
| Ergbkap Ltd | Haverfordwest | 2023 |
| Ergiri Ltd | London | 2024 |
| Ergoman Limited | Glasgow | 1998 |
| Ergonomics at Work Limited | Manchester | 1998 |
| Ergorite Industry Co., Ltd. | Stafford | 2015 |
| Ergosphere Ltd | Glasgow | 2024 |
| Eric Allen Ross Limited | London | 2021 |
| Eric Distin Financial Services Limited | Cornwall | 1985 |
| Eric F. Box (Funeral Directors) Limited | West Yorkshire | 1976 |
| Eric Stuart Limited | Newhaven | 2018 |
| Eric Wright Commercial Limited | Preston Lancashire | 1998 |
| Ericad Global Ltd | Birmingham | 2022 |
| Eridge Park Estate Group Limited | Wells | 2010 |
| Eridge Park Estate Hotels Limited | Wells | 2010 |
| Eridge Park Estate Limited | Tunbridge Wells | 2010 |
| Eridge Park Farm Shop Limited | Tunbridge Wells | 2012 |
| Eridge Park Festivals Limited | Tunbridge Wells | 2009 |
| Erie Finance 1 Limited | Altrincham | 2018 |
| Erie Finance 2 Limited | Altrincham | 2018 |
| Erie Finance Holding Limited | Altrincham | 2018 |
| Erie N2 UK Limited | Altrincham | 2018 |
| Erie UK 3 Limited | Altrincham | 2018 |
| Erie UK 4 Limited | Altrincham | 2018 |
| Erie UK 5 Limited | Altrincham | 2018 |
| Erie UK 6 Limited | Altrincham | 2023 |
| Erik Malmqvist Hovslageri Limited | London | 2023 |
| Erik Pelham Limited | Louth | 2019 |
| Erik Čižmár Ltd | Poole | 2024 |
| Erin Energie Limited | Omagh | 2011 |
| Erin Taxis Ltd. | Edinburgh | 2001 |
| Erindan Associates Ltd | Warmley | 2009 |
| Erinoid Ltd | Whitley Bay | 2014 |
| Eriocos Ltd | London | 2022 |
| Eris Hair and Beauty Limited | Polegate | 2023 |
| Eris Investments Limited | London | 2015 |
| Eriskology Limited | London | 2015 |
| Erison Electric Group Ltd | London | 2016 |
| Erith Tipping Services Limited | London | 1996 |
| Erith Waste Recycling Limited | Orpington | 2008 |
| Eriton Securities Limited | Southwell | 1957 |
| Eriza Ltd | Leeds | 2026 |
| ERK Marine Ltd | London | 2024 |
| ERL Support Services Limited | Torquay | 2018 |
| Erland VP Ltd | Blackpool | 2016 |
| Erlanger Road Residents Association Company Limited | London | 1999 |
| Erlangers Limited | London | 1996 |
| Erlesmere Gardens 1966 Limited | London | 2014 |
| Erlinda Teresa Holden Ltd | Salisbury | 2022 |
| ERM Contracts Limited | Bury | 2015 |
| ERM Eurasia Limited | London | 1989 |
| ERM Family Investment Company Limited | Chatteris | 2017 |
| Ermine Investments UK Ltd | Salford | 2021 |
| Ermine Street Housing Limited | Cambridge | 2014 |
| Erne Form Limited | Enniskillen | 2024 |
| Erne Marine Management Company Limited | Enniskillen | 2005 |
| Erne Power Ltd | Unst | 2018 |
| Ernest DOE Industrial Limited | Essex | 1963 |
| Ernest Frank Limited | Bakewell | 2018 |
| Ernest Grove Limited | Beckenham | 2009 |
| Ernest Ireland Construction Limited | London | 1977 |
| Ernest Jones & Co.(London)Limited | Birmingham | 1949 |
| Ernest Jones (Jewellers) Limited | Birmingham | 1978 |
| Ernest LEE (Electrical Services) Limited | Wythenshawe | 1956 |
| Ernest LEE Holdings Limited | Manchester | 1999 |
| Ernest Newton (Western) Limited | Shrewsbury | 1948 |
| Ernestco Ltd | Camberley | 2026 |
| Ernesto Investment Limited | London | 2024 |
| Ernesto Norway Limited | London | 2024 |
| Ernie Peter Panayi Ltd | Gravesend | 2024 |
| Erno Kids Ltd | Wolverhampton | 2016 |
| Erntsen Allservice Limited | London | 2020 |
| Erok Yachting Limited | London | 2025 |
| Eroticats Ltd | Gloucester | 2011 |
| ERP Nordisk Limited | Rochford | 1999 |
| ERP Property Group Ltd | Coatbridge | 2020 |
| Erpasan UK Yachting Ltd | Blackpool | 2023 |
| Erpingham Court Management Company Limited | Hunstanton | 2016 |
| Erregi Limited | Victoria | 2000 |
| Erroll Emmanuel Chambers Ltd | Northampton | 2025 |