| Belfast Aesthetic Hub Ltd | Belfast | 2017 |
| Belfast Back Care Ltd | Coleraine | 2019 |
| Belfast Central Business District (BID) Ltd | Belfast | 2017 |
| Belfast Chamber of Trade and Commerce Limited | Belfast | 2018 |
| Belfast City Airport Watch Limited | Belfast | 2008 |
| Belfast City Centre Chaplaincy | Belfast | 2019 |
| Belfast City Vineyard Church | Belfast | 2006 |
| Belfast Civic Trust Limited | Hillsborough | 2010 |
| Belfast Computer Repairs Ltd | Newtownabbey | 2026 |
| Belfast Cremation Services Limited | Newtownards | 2022 |
| Belfast INK Limited | Lisburn | 2018 |
| Belfast Interface Project | Belfast | 2007 |
| Belfast Locks Ltd | Holywood | 1996 |
| Belfast Locksmith Services Ltd | Lisburn | 2025 |
| Belfast Nails and Spa Ltd | Belfast | 2021 |
| Belfast Nails Ltd | Belfast | 2021 |
| Belfast One BID Limited | Belfast | 2016 |
| Belfast Personal Trainer Limited | Downpatrick | 2019 |
| Belfast Pilates & Physiotherapy Limited | Belfast | 2021 |
| Belfast Repair Centre Limited | Belfast | 2019 |
| Belfast Samaritans | Belfast | 2017 |
| Belfast Travel Services Ltd | Antrim | 2019 |
| Belfast Ymca Limited | Belfast | 1960 |
| Belfield Montessori Day Nursery Limited | London | 2005 |
| Belfield Physiotherapy Limited | Tunbridge Wells | 2008 |
| Belfort Drilling Services Ltd | Haywards Heath | 2017 |
| Belforte Ltd | Poole | 2017 |
| Belfour Properties Limited | Middlesbrough | 2010 |
| Belfray Property Ltd | Limavady | 2017 |
| Belfre Limited | Wilmslow | 2017 |
| Belfry Mews Management Company Limited | Sandhurst | 2001 |
| Belgian-Luxembourg Chamber of Commerce in Great Britain (Incorporated) | South Cave | 1913 |
| Belgin Limited | Cardiff | 2010 |
| Belgium FRY Limited | London | 2025 |
| Belgra Fintech Holdings Limited | London | 2023 |
| Belgrave Barbers Ltd | Leicester | 2019 |
| Belgrave Community Garden Limited | Glasgow | 2022 |
| Belgrave Financial Trading Ltd | Pinner | 2009 |
| Belgrave Gardens Investment Company Limited | London | 1957 |
| Belgrave Laser Clinic Ltd | Leicester | 2021 |
| Belgrave Leicester Ltd | Leicester | 2017 |
| Belgrave Mind Ltd | Walsall | 2021 |
| Belgrave Nails Ltd | Leicester | 2024 |
| Belgrave Premium DRY Cleaners Limited | Ilford | 2021 |
| Belgrave Rooms Limited | Nottingham | 2000 |
| Belgrave UK Limited | Sheffield | 2008 |
| Belgrave Vale Limited | East Riding | 1996 |
| Belgraves Services Ltd | Ellesmere Port | 2021 |
| Belgravia Auto Valet Limited | London | 2015 |
| Belgravia Concept Hair Ltd | London | 2021 |
| Belgravia Consultants Limited | London | 2022 |
| Belgravia Corp Limited | London | 2024 |
| Belgravia Global Consultants Limited | Northiam | 2021 |
| Belgravia Hardwood Windows & Doors Ltd | Chatham | 2020 |
| Belgravia Intermediary Services Limited | London | 2023 |
| Belgravia International Services Limited | London | 2025 |
| Belgravia International Trading Limited | London | 2025 |
| Belgravia LHR Room Ltd | Uxbridge | 2019 |
| Belgravia Nation Limited | London | 2024 |
| Belgravia National Limited | Ilford | 2024 |
| Belgravia Neighbourhood Forum Limited | London | 2018 |
| Belgravia Prime Group Limited | London | 2020 |
| Belgravia Services Limited | London | 2025 |
| Belgravia Systems Limited | London | 2026 |
| Belgravia Traders Limited | London | 2026 |
| Belgravia Trading Limited | London | 2026 |
| Belgravia Worldwide Limited | Manchester | 2023 |
| Belhaven Aeroservices Ltd. | Edinburgh | 2010 |
| Belhaven Boarding Ltd | Larkhall | 2023 |
| Belheir Ltd | Nottingham | 2021 |
| Belief Business Ltd. | Edinburgh | 2011 |
| Belief Dynamics Ltd | Hitchin | 2024 |
| Believe & Achieve London Limited | London | 2019 |
| Believe Christian Centre | London | 2014 |
| Believe Fitness Body Coach Ltd | Doncaster | 2026 |
| Believe in Jesus Limited | Lauder | 2019 |
| Believe Life Ltd | London | 2023 |
| Believe My Hype Coaching Limited | Windsor | 2020 |
| Believe Perform Limited | Cheltenham | 2013 |
| BELIEVE2BREATHE Limited | London | 2026 |
| Believers Anointing Ministry | Mitcham Eastfields | 2022 |
| Believers Eastern Church UK | Peterborough | 2020 |
| Believers Evangelistic Fellowship Ltd | London | 2015 |
| Believers Faith Campaign Ltd | Dartford | 2019 |
| Believers Home UK Limited | Oldham | 2022 |
| Believers Hope Christian Assembly | Manchester | 2019 |
| Believers Light Fellowship Limited | Wolverhampton | 2023 |
| Believers Loveworld Glasgow Ltd | Glasgow | 2024 |
| Believers Worship Centre CIC | London | 2022 |
| Believers' Generation of Believers' Foundation | Erith | 2006 |
| Believing and Achieving Legal Ltd | Liverpool | 2024 |
| Beligado Limited | London | 2024 |
| Belinda Harley Associates Limited | | 1991 |
| Belinda Milligan Physiotherapy Limited | Wetherby | 2013 |
| Belinda Mindset Education Ltd | Westmoor | 2012 |
| Belinda Price Nails and Beauty Limited | Huddersfield | 2013 |
| Belinda Roberts Interior Design Limited | London | 2015 |
| Belinda's Beauty Saloon Ltd | Liverpool | 2020 |
| Belion Legal Ltd | London | 2018 |
| Belion Network Ltd | London | 2018 |