| Sajana UK Ltd | Wholesale & retail | 2025 |
| Samco Pet Grooming Limited | Other services | 2017 |
| Sandycroft Workwear Ltd. | Wholesale & retail | 2012 |
| SB Wind Ltd | Manufacturing | 2026 |
| SBC (North Wales) Ltd | Wholesale & retail | 2025 |
| Scampz Investments Limited | Real estate | 2021 |
| Scott & Lynch Ltd | Wholesale & retail | 2024 |
| Scott Martin Smith Ltd | Hospitality | 2024 |
| SD Driveways & Patios Ltd | Construction | 2024 |
| SEH Aesthetics Ltd | Other services | 2023 |
| Select Engineering Services Ltd | Professional & scientific | 2018 |
| Selim Food 1 Ltd | Hospitality | 2026 |
| SGB House Ltd | Hospitality | 2019 |
| Shalan Wholesale UK Ltd | Wholesale & retail | 2026 |
| Sheridan Lift Services Ltd | Manufacturing | 2025 |
| Shining Stars School and College Limited | Education | 2025 |
| Shore Safe UK Ltd | Professional & scientific | 2023 |
| SHP Automation Limited | Manufacturing | 2006 |
| Sidneysculpt Ltd | Arts & recreation | 2024 |
| SJ Associates (NW) Ltd | Other services | 2016 |
| Skinique Ltd | Manufacturing | 2025 |
| Sky Property Holdings Ltd | Real estate | 2016 |
| Skylight Homes Ltd | Construction | 2016 |
| Slbrewster Ltd | Manufacturing | 2018 |
| SLM Estates Limited | Real estate | 2023 |
| Smstorage Ltd | Transport & logistics | 2026 |
| Solar Roofing Specialists (NW) Limited | Construction | 2026 |
| Somos Collective Limited | Professional & scientific | 2025 |
| Soul Blossom & Co Ltd | Manufacturing | 2019 |
| SP Safety Services Limited | Real estate | 2008 |
| Spice Senses Ltd | Hospitality | 2025 |
| Spiky Green Ltd | Extraterritorial | 2013 |
| Spindlers Estates Ltd | Construction | 2024 |
| Spotless Premier Cleaning Ltd | Other services | 2018 |
| Spotless Solutions Limited | Administrative & support | 2015 |
| ST Blade Repair Ltd | Manufacturing | 2024 |
| St.Melyd Golf Club Limited | Arts & recreation | 1957 |
| Stability IT Equipment Ltd | Wholesale & retail | 2012 |
| Stability IT Support Ltd | Information & communication | 2010 |
| Static Shifters Ltd | Transport & logistics | 2024 |
| Stellar Motion Ltd | Professional & scientific | 2022 |
| Stephen C Harms Limited | Professional & scientific | 2002 |
| Stephen Mcguinness Electrical Services Ltd | Construction | 2019 |
| Stewarts Elec Ltd | Administrative & support | 2017 |
| Stratabyte IT Solutions Ltd | Information & communication | 2026 |
| Studio North Agency Ltd | Extraterritorial | 2026 |
| Suhail Tandoori Restaurant Limited | Hospitality | 2009 |
| Summer Storm Ltd | Professional & scientific | 2021 |
| Sunrise Patisserie Ltd | Hospitality | 2019 |
| Supaclean Ltd | Administrative & support | 2023 |
| Surelok Homes Locksmiths Ltd | Manufacturing | 2019 |
| Surveying Associates Ltd | Construction | 2022 |
| SVG Trading Limited | Real estate | 2024 |
| Swift SOS Ltd | Information & communication | 2019 |
| T & S Williams Limited | Real estate | 2002 |
| T J Courier Services Ltd | Transport & logistics | 2023 |
| T Roberts Services (UK) Ltd | Transport & logistics | 2012 |
| T2G Catering Limited | Hospitality | 2019 |
| Tabby and Toby’S World of Play Ltd | Administrative & support | 2023 |
| Tango 2 Ltd | Real estate | 2016 |
| Tantastic Leigh Ltd | Health & social care | 2023 |
| Taylor Adventures Ltd | Real estate | 2025 |
| Terfyn Hall Town Apartments Ltd | Real estate | 2023 |
| Terfyn Hall West Holiday Apartments Ltd | Real estate | 2022 |
| THE Beauty Bar Academy and Aesthetics Limited | Other services | 2015 |
| THE BEE Green Group Ltd | Professional & scientific | 2023 |
| THE Crofters Pantry Ltd | Hospitality | 2026 |
| THE Damn Computer Ltd | Information & communication | 2017 |
| THE END Productions Ltd | Administrative & support | 2025 |
| THE Fairway View Rhuddlan Ltd | Hospitality | 2025 |
| THE Fern Avenue Limited Partnership | | 2012 |
| THE Football Pledge Limited | Arts & recreation | 2025 |
| THE Hideaway 131 Limited | Hospitality | 2018 |
| THE Independent Hearing Clinic Ltd | Wholesale & retail | 2024 |
| THE Old Blacksmith's Holiday Parks Ltd | Hospitality | 2024 |
| THE Snowdonia Lime Company Ltd | Construction | 2025 |
| THE Spudfellas Baked Potatos Ltd | Hospitality | 2025 |
| THE Trainer Container Ltd | Wholesale & retail | 2026 |
| Thedollhouse Ltd | Education | 2022 |
| TIM Denton Design Limited | Information & communication | 2007 |
| Tl.Hickman Limited | Manufacturing | 2025 |
| TNT Capital Ltd | Real estate | 2025 |
| Together Homes NW Limited | Hospitality | 2024 |
| Tomi Travel Ltd | Transport & logistics | 2026 |
| Tower Court (UK) Limited | Real estate | 2004 |
| Town & Country Garage Chester Ltd | Wholesale & retail | 2020 |
| Traderbid Ltd | Professional & scientific | 2023 |
| Traditio Solutions Ltd | Professional & scientific | 2024 |
| Tripunk Ltd | Information & communication | 2021 |
| Tyfu Prestatyn C.I.C. | Agriculture & fishing | 2025 |
| Underground Vision UK Limited | Water & waste | 2021 |
| United Contract Services Limited | Administrative & support | 2020 |
| Varis Homes Limited | Construction | 2020 |
| Venus Aesthetics Group Ltd | Other services | 2022 |
| Vero Bathrooms Limited | Wholesale & retail | 2026 |
| Vicarys Tuition Services Ltd | Education | 2024 |
| Vintage Sugar Bar & Bistro Ltd | Transport & logistics | 2008 |
| Visage Sknn Limited | Other services | 2024 |
| VKS Services 4U Ltd | Wholesale & retail | 2025 |
| Vortex Trade Solutions Ltd | Administrative & support | 2026 |