| Steel City Car Keys Ltd | Professional & scientific | 2025 |
| Steel City Catering Ltd | Hospitality | 2021 |
| Steel City Chapel Ltd | Other services | 2023 |
| Steel City Construction Ltd | Construction | 2016 |
| Steel City Consulting Limited | Information & communication | 2018 |
| Steel City Contracting and Site Services Limited | Construction | 2013 |
| Steel City Creative Ltd | Professional & scientific | 2024 |
| Steel City Developments Limited | Administrative & support | 2012 |
| Steel City Electrical Contractors Ltd | Construction | 2026 |
| Steel City Electrics Limited | Construction | 2025 |
| Steel City Estate Agents Ltd | Real estate | 2025 |
| Steel City Estates Limited | Real estate | 2010 |
| Steel City Executive Limited | Transport & logistics | 2026 |
| Steel City Fabrications Ltd | Manufacturing | 2013 |
| Steel City Finance Ltd | Professional & scientific | 2026 |
| Steel City Flooring Ltd | Construction | 2019 |
| Steel City FSE Ltd | Wholesale & retail | 2019 |
| Steel City Fundraising Ltd | Health & social care | 2018 |
| Steel City Garage Ltd | Wholesale & retail | 2019 |
| Steel City Gutters Ltd | Administrative & support | 2020 |
| Steel City House Limited | Real estate | 2014 |
| Steel City Housing Ltd | Real estate | 2025 |
| Steel City Implants Ltd | Health & social care | 2023 |
| Steel City Inspection Limited | Other services | 2019 |
| Steel City Installations Ltd | Construction | 2026 |
| Steel City Interactive Ltd | Information & communication | 2020 |
| Steel City Lettings Ltd | Real estate | 2025 |
| Steel City Marketing Limited | Wholesale & retail | 1980 |
| Steel City Martial Arts Limited | Education | 2022 |
| Steel City Mechanical Ltd | Construction | 2024 |
| Steel City Media Ltd | Administrative & support | 2012 |
| Steel City Medical Services Limited | Health & social care | 2019 |
| Steel City Medics Limited | Real estate | 2021 |
| Steel City Mortgages Ltd | Financial services | 2017 |
| Steel City Mots Ltd | Wholesale & retail | 2019 |
| Steel City Packaging Ltd | Wholesale & retail | 2024 |
| Steel City Plasterers Ltd | Construction | 2026 |
| Steel City Plumbing Ltd | Construction | 2023 |
| Steel City Pointing Ltd | Construction | 2019 |
| Steel City Press Ltd | Information & communication | 2018 |
| Steel City Projects Ltd | Professional & scientific | 2025 |
| Steel City Property Developments Ltd | Construction | 2024 |
| Steel City Property Holdings Ltd | Real estate | 2026 |
| Steel City Recovery Ltd | Transport & logistics | 2026 |
| Steel City Sales Ltd | Information & communication | 2023 |
| Steel City Scaffolding Limited | Construction | 2007 |
| Steel City Schools Partnership | Education | 2013 |
| Steel City Shop Ltd | Wholesale & retail | 2025 |
| Steel City Sports CIC | Education | 2021 |
| Steel City Studio Limited | Information & communication | 2016 |
| Steel City Surfacing Ltd | Construction | 2022 |
| Steel City Theatre Arts Ltd | Education | 2026 |
| Steel City Tiling Limited | Construction | 2007 |
| Steel City Tools Ltd | Wholesale & retail | 2015 |
| Steel City Training Ltd | Education | 2025 |
| Steel City Turbos Limited | Professional & scientific | 2015 |
| Steel City Vehicle Solutions Ltd | Wholesale & retail | 2026 |
| Steel City Welding Services Ltd | Professional & scientific | 2011 |
| Steel City Windows Ltd | Manufacturing | 2020 |
| Steel City Writing Limited | Professional & scientific | 2023 |
| Steel Coaching Ltd | Professional & scientific | 2024 |
| Steel Events Limited | Administrative & support | 2015 |
| Steel Evolution MMA CIC | Education | 2023 |
| Steel Forge Equestrian Limited | Administrative & support | 2025 |
| Steel Frame Contracts Ltd | Manufacturing | 2025 |
| Steel Husky Ltd | Wholesale & retail | 2022 |
| Steel Line Cutting Tools Limited | Extraterritorial | 2025 |
| Steel Line Limited | Manufacturing | 2000 |
| Steel Line Property Limited | Manufacturing | 2016 |
| Steel OWL Logistics Ltd | Transport & logistics | 2025 |
| Steel Paws Ltd | Arts & recreation | 2021 |
| Steel Physique Ltd | Arts & recreation | 2019 |
| Steel Plate and Sections Projects Limited | Wholesale & retail | 2020 |
| Steel Prop Ltd | Real estate | 2025 |
| Steel Properties Ltd | Real estate | 2022 |
| Steel Property Development and Construction Limited | Construction | 2024 |
| Steel Property Limited | Real estate | 2015 |
| Steel Roots Design Limited | Manufacturing | 2016 |
| Steel Salvage Limited | | 1983 |
| Steel Street Consulting Ltd | Professional & scientific | 2024 |
| Steel Support Ltd | Other services | 2025 |
| Steel Tiger Records Ltd | Administrative & support | 2006 |
| Steel Vault Ltd | Wholesale & retail | 2026 |
| Steel Wool Yarns Ltd | Wholesale & retail | 2026 |
| Steelback Limited | Extraterritorial | 2013 |
| Steelcity Fasteners Limited | Wholesale & retail | 2009 |
| Steelcity Technologies Ltd | Wholesale & retail | 2022 |
| Steelcitybarmngmt Limited | Hospitality | 2025 |
| Steelcitystays Ltd | Real estate | 2024 |
| Steeled C.I.C. | Health & social care | 2022 |
| Steelers Ice Arena Holdings Limited | Financial services | 2024 |
| Steelers Ice Arena Limited | Arts & recreation | 2011 |
| Steelers in the Community C.I.C. | Education | 2012 |
| Steelfogg UK Ltd | Wholesale & retail | 2019 |
| Steelgram Fabrications Limited | Manufacturing | 2008 |
| Steelisgrey Ltd | Professional & scientific | 2020 |
| Steelside Trading Ltd | Wholesale & retail | 2026 |
| Steelworks Productions Limited | Information & communication | 1997 |
| Steelyard Coffee House & Kitchen Limited | Hospitality | 2025 |
| Steer Commercials Sales & Exports Ltd | Wholesale & retail | 2020 |