| SK Prime Collection Limited | Wholesale & retail | 2024 |
| SK Thava Ltd | Wholesale & retail | 2024 |
| SK Wholesale Limited | Wholesale & retail | 2022 |
| Sk's Fresh & Frozen Ltd | Hospitality | 2015 |
| SK-1 Professional Services Ltd | Professional & scientific | 2016 |
| SK8N Ltd | Other services | 2023 |
| SKA IT Consulting Limited | Information & communication | 2015 |
| Skai Digital Ltd | Information & communication | 2025 |
| Skai Property Ltd | Real estate | 2025 |
| Skaleem Ltd | Wholesale & retail | 2022 |
| Skart Limited | Professional & scientific | 2024 |
| Skateland UK (Nottingham) Limited | Arts & recreation | 2016 |
| Skaudio Limited | Information & communication | 2016 |
| SKB Decorators Ltd | Construction | 2026 |
| SKB Projects Ltd | Real estate | 2026 |
| Skbv Ltd | Other services | 2025 |
| Skchold Ltd | Financial services | 2026 |
| Skcprojects Ltd | Professional & scientific | 2022 |
| Skech Rail Ltd. | Construction | 2016 |
| Skegby Rifle Volunteer Ltd | Hospitality | 2019 |
| Skegness Retreats Caravan & Lodge Cleaning & Management Services Limited | Hospitality | 2025 |
| Skel-Don Group Limited | Water & waste | 2025 |
| Skellett Homes Limited | Construction | 2016 |
| Skenderaj Properties Ltd | Real estate | 2024 |
| Skern Lodge Limited | Arts & recreation | 2004 |
| Skerritt Properties Limited | Real estate | 1984 |
| Skerritts of Nottingham Limited | Hospitality | 1984 |
| Sketbaq Tech Limited | Information & communication | 2026 |
| Sketchbook Limited | Professional & scientific | 2015 |
| Skeyton Ltd | Transport & logistics | 2022 |
| SKF Engineering Projects Ltd | Professional & scientific | 2020 |
| SKG Lettings Limited | Real estate | 2024 |
| SKH Hair Limited | Other services | 2021 |
| SKH Hospitality Ltd | Financial services | 2026 |
| SKI Real Estates Ltd | Real estate | 2025 |
| Skiddaw Legal Consultancy Limited | Professional & scientific | 2013 |
| Skill Source Ltd | Professional & scientific | 2025 |
| Skillbox.Me Ltd | Administrative & support | 2012 |
| Skilled Hands Organisation CIC | Education | 2023 |
| Skills & Wardle Sports Tours Limited | Administrative & support | 2006 |
| Skills and Education Group | Education | 1991 |
| Skills and Education Group Access | Education | 1999 |
| Skills and Education Group Awards | Education | 2000 |
| Skills Coaching for Work Limited | Education | 2022 |
| Skills GAP Learning Limited | Education | 2020 |
| Skills Leisure Limited | Administrative & support | 1987 |
| Skills Limited | Professional & scientific | 1999 |
| Skills Sector Consultancy Limited | Administrative & support | 2014 |
| Skills Transport Solutions Limited | Construction | 2008 |
| Skills Travel Limited | Transport & logistics | 1955 |
| Skillup Notts Ltd | Education | 2025 |
| Skimcell Limited | Information & communication | 1980 |
| Skin Collective Clinic Limited | Other services | 2019 |
| Skin Confident Ltd | Wholesale & retail | 2024 |
| Skin LAB by Leah Ltd | Other services | 2023 |
| Skin Medic Skin Care Limited | Wholesale & retail | 2025 |
| Skin Medica Ltd | Other services | 2025 |
| Skin of Sonder Ltd | Arts & recreation | 2024 |
| Skin Solace Natural Ltd | Other services | 2020 |
| Skin Therapy Aesthetics Ltd | Other services | 2023 |
| SKIN2SEOUL Limited | Wholesale & retail | 2019 |
| SKIN2SEOUL Retail Limited | Wholesale & retail | 2025 |
| Skinnovation Limited | Health & social care | 2000 |
| Skinny JAM EA Ltd | Real estate | 2023 |
| Skinny JAM LLP | | 2014 |
| Skinpod Laser Clinic Ltd | Other services | 2022 |
| Skinshiftstudio Ltd | Other services | 2025 |
| Skintegrity Pro Ltd | Other services | 2015 |
| Skintightrubber Ltd | Manufacturing | 2006 |
| Skipper Group Limited(The) | Professional & scientific | 1961 |
| Skipper of Wakefield Limited | Wholesale & retail | 1935 |
| Skippy (Reuse & Recycle B4 Waste) Limited | Water & waste | 2021 |
| Skipworth Road Management Company (1992) Limited | Households | 1992 |
| Skirmish Combat Games Ltd | Administrative & support | 2021 |
| Skirr Property Services Ltd | Real estate | 2021 |
| Skittytrans Ltd | Transport & logistics | 2018 |
| Skk-Care Ltd | Health & social care | 2025 |
| SKL Chauffeurs Ltd | Transport & logistics | 2026 |
| Sklar Medical Services Limited | Health & social care | 2015 |
| Sklee Ltd | Hospitality | 2019 |
| SKM Catering Ltd | Hospitality | 2018 |
| SKN Heritage Museum CIC | Administrative & support | 2015 |
| Skpd Investments Ltd | Real estate | 2020 |
| SKS Electrical Services Ltd | Construction | 2021 |
| SKS Partners Ltd | Health & social care | 2021 |
| Skulduggery Merchant Ltd | Wholesale & retail | 2023 |
| SKW Property Limited | Real estate | 2022 |
| Sky Bar Portsmouth Ltd | Hospitality | 2012 |
| Sky Blue Removals Limited | Transport & logistics | 2017 |
| Sky Cars Transport Ltd | Wholesale & retail | 2026 |
| Sky Horse Ltd | Information & communication | 2022 |
| Sky Investments Limited | Health & social care | 2012 |
| Sky IOT Ltd | Information & communication | 2009 |
| Sky Nails & Spa Hucknall Ltd | Other services | 2024 |
| Sky Packaging Limited | Manufacturing | 2023 |
| Sky Property Maintenance Ltd | Construction | 2016 |
| Sky Property Nottingham Ltd | Real estate | 2021 |
| Sky Runner Couriers Limited | Transport & logistics | 2026 |
| Sky Shine NG Ltd | Administrative & support | 2026 |
| Skyco Logistics Limited | Transport & logistics | 2018 |