| Belfast Ceramic Studio Ltd | Belfast | 2020 |
| Belfast Ceramic Workshop Ltd | Belfast | 2021 |
| Belfast Child C.I.C. | Belfast | 2013 |
| Belfast City Marathon Limited | Belfast | 1982 |
| Belfast City Sightseeing Limited | Belfast | 2009 |
| Belfast City Skinworks (Holdings) Ltd | Carrickfergus | 2018 |
| Belfast City Skinworks (N.I.) Ltd | Carrickfergus | 2018 |
| Belfast Eagles Rlfc Ltd | Newtownabbey | 2022 |
| Belfast Exposed Photography | Belfast | 2001 |
| Belfast Film Festival Ltd | Belfast | 1997 |
| Belfast Girl's Club Union-The | Belfast | 1946 |
| Belfast International Watersports Limited | Belfast | 2017 |
| Belfast MA Limited | Lisburn | 2020 |
| Belfast Makerspace Ltd | Belfast | 2024 |
| Belfast Music Society Limited | Belfast | 2016 |
| Belfast Operatic Company | Belfast | 2020 |
| Belfast Platform for the Arts | Ballyclare | 2009 |
| Belfast Playbus Limited | Larne | 2017 |
| Belfast Playwrights CIC | Belfast | 2026 |
| Belfast Pride Ltd | Belfast | 2021 |
| Belfast Print Workshop | Belfast | 1997 |
| Belfast Rights Limited | Harrow | 2017 |
| Belfast Roller Derby Limited | Belfast | 2014 |
| Belfast Rooftops Ltd | Belfast | 2019 |
| Belfast Rowing Club CIC | Belfast | 2025 |
| Belfast School of Salsa Limited | Newtownards | 2025 |
| Belfast Storm Ltd | Hillsborough | 2016 |
| Belfast Swifts FC C.I.C. | Belfast | 2017 |
| Belfast True Pilates Studio Limited | Banbridge | 2025 |
| Belfast Waterfront and Ulster Hall Limited | Belfast | 2016 |
| Belfield & Ward Limited | London | 2014 |
| Belford Golf Club Ltd | Newcastle Upon Tyne | 2019 |
| Belfrey Arts Trust Limited | Wellington Telford | 1988 |
| Belfry Productions Ltd | London | 2023 |
| Belgard Group Ltd | Wimborne | 2025 |
| Belgard Management Limited | Birmingham | 2010 |
| Belgate Racing Limited | Glasgow | 2024 |
| Belgian CX Project Ltd | Corbridge | 2022 |
| Belgrade Film & Digital Limited | Coventry | 2014 |
| Belgrade Theatre Enterprises Limited | Coventry | 1999 |
| Belgrade Theatre Productions Limited | Coventry | 2014 |
| Belgrade Theatre Trust (Coventry) Limited | Coventry | 1957 |
| Belgrave Fitness Ltd | Southampton | 2024 |
| Belgrave Security Services Limited | Devon | 1985 |
| Belgravecoaching Ltd | Halesowen | 2022 |
| Belgravia Gaming Ltd | London | 2026 |
| Belhaven Surf Centre Ltd | Dunbar | 2017 |
| Belief Sports Comunities | London | 2026 |
| Believe & Achieve Events Limited | Portsmouth | 2012 |
| Believe & Achieve NC Limited | London | 2012 |
| Believe Academy Performing Arts C.I.C. | Penzance | 2016 |
| Believe and Achieve Sports Limited | Birmingham | 2015 |
| Believe Creative Studio Limited | Preston, | 2021 |
| Believe Dance Competition Ltd | Irvine | 2024 |
| Believe Entertainment Ltd | Paisley | 2011 |
| Believe Fitness - Stronger Together CIC | Doncaster | 2025 |
| Believe in the Process Limited | London | 2025 |
| Believe IT School of Perfoming Arts Limited | Barnsley | 2019 |
| Believe IT School of Performing Arts (Ealing) Limited | Barnsley | 2019 |
| Believe to Run Ltd | South Shields | 2022 |
| Believe.Engage.Nurture Sports Management Ltd | Ipswich | 2021 |
| Belift Studio Limited | Hove | 2023 |
| Belinda Norcliffe Casting Limited | Stevenage | 2005 |
| Belize Elite PT Limited | Waterlooville | 2017 |
| Bell Adam Associates Ltd | London | 2012 |
| Bell and Bell Inc Ltd | Borehamwood | 2013 |
| Bell Books Limited | London | 2006 |
| Bell Fitness Ltd | Sale | 2013 |
| Bell Foundry Collection Limited | Loughborough | 2010 |
| Bell Golf Ltd | Glasgow | 2009 |
| Bell Hill Dorset Limited | Fordingbridge | 2003 |
| Bella Alice Yachting Ltd | Southampton | 2016 |
| Bella Beauts Records Ltd | London | 2021 |
| Bella Bianco Yachting Ltd | London | 2024 |
| Bella Blue Ltd | Leyland | 2017 |
| Bella Ceramics Limited | Weymouth | 2016 |
| Bella Jones Ceramics Ltd | Potters Bar | 2020 |
| Bella Parties Limited | Leigh-On-Sea | 2008 |
| Bella Younger Limited | London | 2019 |
| Bellablue Competitions Ltd | Belfast | 2024 |
| Bellaboux Ltd | Portslade | 2022 |
| Bellagio Dance Studios CIC | Birmingham | 2024 |
| Bellaigue Ltd | London | 2011 |
| Bellair Bowling and Recreation Club,Limited(The) | Havant | 1906 |
| Bellajo Productions Ltd | Chesterfield | 2014 |
| Bellamy Jean Ltd | Hastings | 2026 |
| Bellamy Racing Limited | Cheltenham | 2023 |
| Bellanoirxx UK Ltd | London | 2025 |
| Bellany Art Ltd | London | 2014 |
| Bellarae Studios Ltd | London | 2025 |
| Bellas Enterprise Limited | Sunderland | 2022 |
| Bellatrix Dance Company Limited | Weston-Super-Mare | 2023 |
| Bellatrix Songs Limited | Bristol | 2017 |
| Bellatrix Strength LAB Limited | Ascot | 2026 |
| Bella’S Ballerinas Limited | Trowbridge | 2024 |
| Bellben Ltd | Henley-In-Arden | 2025 |
| Belle BOO Limited | Hornchurch | 2024 |
| Belle Dansuse Ltd | Bromsgrove | 2011 |
| Belle Decor Ltd | Swansea | 2020 |
| Belle Leisure Ltd | Houghton Le Spring | 2020 |