| Epiphany Arts Trust | Stockport | 2012 |
| Epiphany Theatre Ltd | Cambridge | 2024 |
| Epiphanysp Ltd | London | 2025 |
| Episode Two Ltd | Monmouth | 1994 |
| Episodic Consulting Limited | Chelmsford | 2020 |
| Epitome Pilates Limited | Maldon | 2025 |
| EPL Entertainment Ltd | London | 2022 |
| EPM Entertainment Limited | Hove | 2025 |
| EPM Pilates Ltd | Attleborough | 2025 |
| EPM Productions Ltd | Chester Le Street | 2024 |
| EPN Fitness Limited | Barnstaple | 2016 |
| Epochs Universal Ltd | London | 2026 |
| Epping & Ongar Padel Company Ltd | Epping | 2025 |
| Epping Forest Pistol Club Limited | Epping | 2015 |
| Epping Gymnastics Club Ltd | Epping | 2024 |
| Epping Softplay Limited | Epping | 2026 |
| Epping Upper Clapton Rugby Football Club Ltd | Epping | 2019 |
| Epponnee RAE Limited | Biggleswade | 2004 |
| Epps Performance Ltd | Northampton | 2026 |
| Eppynt Carriage Club Limited | Builth Wells | 2011 |
| EPS Oxford Limited | Wallingford | 2014 |
| Epsb Ltd | Bath | 2017 |
| Epsilon Enterprise Ltd | Hertfordshire | 2020 |
| Epsilon Festivals Limited | Bath | 2020 |
| Epsilon Nominees Limited | London | 2016 |
| Epsilon Sport Services Ltd | Liverpool | 2026 |
| Epsilon TRT Nominees Limited | London | 2016 |
| Epsom & Ewell 1918 FC Limited | Epsom | 2023 |
| Epsom & Ewell Colts Football Club Limited | Hampton | 2021 |
| Epsom and Ewell Festival Ltd | Epsom | 2021 |
| Epsom and Ewell Sports Park CIC | London | 2023 |
| Epsom Festival Ltd | Epsom | 2021 |
| Epsom Fireworks Display Ltd | Epsom | 2019 |
| Epsom Golf Club Limited | Epsom Downs | 2024 |
| Epsom Park Bowling Club Limited | Tadworth | 2008 |
| Epsom Polo Club Limited | Epsom | 1997 |
| Epsom Sports Club | Epsom | 2017 |
| EPT100 Limited | Chandler'S Ford | 2024 |
| Epulsive Ltd. | London | 2014 |
| Epworth Equestrian Limited | North Lincolnshire | 2005 |
| Epworth Studios Ltd | Liskeard | 2024 |
| Epynt Motor Club Limited | Llandrindod Wells | 1990 |
| EQ Bands Ltd | Moreton-In-Marsh | 2022 |
| EQ Dance C0 C.I.C. | Glasgow | 2024 |
| EQ Esports and Gaming Ltd | Dukinfield | 2021 |
| EQ Pictures Limited | London | 2011 |
| EQ Sport C.I.C. | Ardgay | 2016 |
| EQ Tickets Ltd | London | 2024 |
| Eqty in Music Ltd | Manchester | 2012 |
| Equ-I-Nimity Hooves of Healing Ltd | Doncaster | 2026 |
| Equal Adventure | Grantown-On-Spey | 2008 |
| Equal Adventure Developments Limited | Grantown-On-Spey | 2002 |
| Equal Arts Ltd. | Newcastle Upon Tyne | 1986 |
| Equal Fitness Personal Training Ltd | London | 2024 |
| Equal Support Opportunities CIC | Swadlincote | 2016 |
| Equal Vision Community Interest Company | Malvern | 2016 |
| Equalcite Limited | Sheffield | 1997 |
| Equalise Sports Management Limited | Peterlee | 2025 |
| Equality Rocks Limited | Harrow | 2019 |
| Equasonics Ltd | Watlington | 2023 |
| Equate Services Limited | Bicester | 1993 |
| Equator Festival Limited | Tenterden | 2009 |
| Equestar Limited | Strathaven | 2022 |
| Equestra Limited | Much Wenlock | 2023 |
| Equestrian Events Limited | Old Hatfield | 2017 |
| Equestrian Facility Services Limited | Benfleet | 2014 |
| Equestrian Games UK Ltd | Tiverton | 2021 |
| Equestrian Harmony Ltd | Ringwood | 2023 |
| Equestrian Promotions Ltd | Tunbridge Wells | 2009 |
| Equestrian Sport Services Limited | Aldermaston | 2017 |
| Equestrian Theatre Limited | Banbury | 2017 |
| Equi Farm Competitions Ltd | Montrose | 2025 |
| Equi+Poise Competitions Limited | Blandford Forum | 2020 |
| Equibox Jumps Ltd | Nottingham | 2019 |
| Equiclub Limited | Liverpool | 2020 |
| Equido Horsemanship Limited | Larkhall | 2013 |
| Equidraws Ltd | Newcastle | 2025 |
| Equievolve Coaching Limited | Southampton | 2014 |
| Equigraphic Studios Limited | Leeds | 1986 |
| Equilibrium HWP Holding Limited | Grantham | 2020 |
| Equilibrium HWP Limited | Grantham | 2013 |
| Equilibrium International Limited | Manchester | 2016 |
| Equilibrium Movement Ltd | Chester | 2020 |
| Equilibrium Personal Training Limited | Grantham | 2021 |
| Equilibrium Peterborough Limited | Peterborough | 2007 |
| Equilibrium Pilates & Fitness Limited | Ludgershall | 2023 |
| Equilibrium Pilates Room Ltd | Tamworth | 2022 |
| Equilibrium Studios Limited | Petersfield | 2019 |
| Equimind Ltd | Crowthorne | 2016 |
| Equimist Ltd | Midhurst | 2026 |
| Equiname Limited | Newcastle Upon Tyne | 1986 |
| Equine Access Limited | Worcester | 2014 |
| Equine Bitting Solutions Ltd | Swanley | 2020 |
| Equine Investment Management Limited | Malvern | 2014 |
| Equine Investments Limited | Ipswich | 2005 |
| Equine Sales Limited | Tunbridge Wells | 2024 |
| Equine Training & Behaviour Limited | Chertsey | 2015 |
| Equinell Limited | Glasgow | 2021 |
| Equinoccial FC Ltd | Orpington | 2021 |
| Equinox Ballooning Limited | Bristol | 2014 |