| Sportstrek Coaching Ltd | Arts & recreation | 2013 |
| Spring BK Court Management Company Limited | Households | 2016 |
| Spring Croft Developments Ltd | Construction | 2007 |
| SSLS2019 Limited | Professional & scientific | 2019 |
| ST. Bridget's Kids' Club Ltd | Education | 2017 |
| ST. Helen's Dental Practice Limited | Health & social care | 2011 |
| Stair Mill Cottages Ltd | Hospitality | 2013 |
| Stamper Bonny Limited | Agriculture & fishing | 2021 |
| Stanleys Joinery Limited | Manufacturing | 2009 |
| Steven Dixon Plumbing and Heating Services Limited | Construction | 2003 |
| Stonecross South Interiors Limited | Construction | 2016 |
| Stopford Marine Ltd | Transport & logistics | 2021 |
| Stothard Locum Services Ltd | Health & social care | 2022 |
| Strathconan Limited | Other services | 2025 |
| Strawberry HOW Nursery School Ltd | Health & social care | 2009 |
| Strengthening Practice Limited | Health & social care | 2014 |
| Studio Nine Dance & Fitness Centre Limited | Education | 2014 |
| Sugar BEE Sensory Ltd | Arts & recreation | 2025 |
| Sunkissed (Cumbria) Limited | Other services | 2024 |
| Sunshine Consultants Limited | Administrative & support | 2022 |
| Sunshine Properties West Coast Limited | Real estate | 2020 |
| Super FUN Events Ltd | Arts & recreation | 2021 |
| Support in Sport (Manufacturing) Company Limited | Manufacturing | 2005 |
| Support in Sport (UK) Limited | Construction | 2001 |
| Support in Sport Group Limited | Financial services | 2001 |
| Surf Snax Ltd | Manufacturing | 2018 |
| Syke Farm Camp Site Limited | Hospitality | 2015 |
| Syke Farm Tearoom and Gifts Limited | Hospitality | 2015 |
| T K Properties Limited | Real estate | 2006 |
| T.N. Gregory Properties Ltd | Real estate | 2024 |
| Takedown Grappling Ltd | Arts & recreation | 2024 |
| Tallentire Hall Limited | Hospitality | 2026 |
| Tallentire Hill Farm Limited | Agriculture & fishing | 2013 |
| Tattersall Bailey & Co Limited | Professional & scientific | 2013 |
| Taylor Made Prospects Ltd | Public administration | 2022 |
| TD Bowler & Sons Limited | Professional & scientific | 2006 |
| Tebay Investments Ltd | Real estate | 2025 |
| Tees Community Power Company Limited | Construction | 2022 |
| Tens Hundreds Thousands Limited | Wholesale & retail | 2018 |
| THE Beauty Loft by Louise Limited | Other services | 2018 |
| THE Bidbase Ltd | Professional & scientific | 2023 |
| THE Chicken Shop (Workington) Limited | Hospitality | 2014 |
| THE Collection by Alice Rebecca Limited | Wholesale & retail | 2007 |
| THE Court Care Group Limited | Health & social care | 2018 |
| THE Court Hotel Group Ltd | Hospitality | 2018 |
| THE Dog Room (Cockermouth) Limited | Other services | 2018 |
| THE Dovenby Ship (Cumbria) Limited | Hospitality | 2020 |
| THE Environment Practice (Keswick) Limited | Professional & scientific | 2015 |
| THE Globe Hotel (Cockermouth) Limited | Hospitality | 2002 |
| THE Good Skin Guru Ltd | Health & social care | 2022 |
| THE Greysouthen Estate Management Company Limited | Hospitality | 1988 |
| THE Hound Racing Association Limited | Arts & recreation | 1972 |
| THE Lakeland Swim School Limited | Education | 2021 |
| THE Lakes Chocolatier Ltd | Manufacturing | 2021 |
| THE Lakes Property Group Limited | Real estate | 2019 |
| THE Letters Inn Limited | Hospitality | 2011 |
| THE Local Cumbria Ltd | Wholesale & retail | 2026 |
| THE Moon & Sixpence (Cumbria) Limited | Hospitality | 2016 |
| THE New Bookshop Limited | Wholesale & retail | 2014 |
| THE New Cock and Bull Ltd | Hospitality | 2016 |
| THE Original Johns Plaice Limited | Hospitality | 2010 |
| THE Pharmshop Limited | Financial services | 2016 |
| THE Safer Eating Company Limited | Information & communication | 2013 |
| THE Square Mile Coffee Roasters Ltd | Manufacturing | 2007 |
| THE Sun Inn @ the Lakes Limited | Hospitality | 2020 |
| THE Toy Shop (Cockermouth) Limited | Wholesale & retail | 2012 |
| THE Unicorn Inn Ambleside Ltd | Hospitality | 2023 |
| THE Vicky Cockermouth Ltd | Administrative & support | 2018 |
| THE Wild Page Books Ltd | Wholesale & retail | 2025 |
| Thomas Stanley Limited | Hospitality | 2011 |
| Thorncroft House Workington (1998) Limited | Households | 1999 |
| Thorpe Motors Ltd | Wholesale & retail | 2022 |
| Threads of Agora Ltd | Wholesale & retail | 2024 |
| Three Cups Walk Management Company Limited | Households | 2022 |
| TIM Irlam Electrical Services Ltd | Construction | 2022 |
| TIM Robinson Tutoring Limited | Education | 2025 |
| Timing UP North Ltd | Arts & recreation | 2017 |
| Tithe Barn Investments Ltd | Real estate | 2019 |
| TMR Designs Ltd | Manufacturing | 2011 |
| TNW Wealth Limited | Financial services | 2024 |
| Todd and Manchester Limited | Construction | 2017 |
| Tranter Medical Limited | Health & social care | 2022 |
| Tree on the Hill Limited | Construction | 2011 |
| Treesherriff Limited | Agriculture & fishing | 2015 |
| Tricky Eaters Ltd | Health & social care | 2020 |
| Trinity Holiday Homes Limited | Wholesale & retail | 2016 |
| Trinity Pharma Ltd | Wholesale & retail | 2009 |
| Triton Stone (Cumbria) Limited | Manufacturing | 2025 |
| True Dream Competitions Ltd | Other services | 2024 |
| True Dream Consulting Ltd | Administrative & support | 2025 |
| Tryall Tech Engineering Limited | Professional & scientific | 2021 |
| TSM Electrical Limited | Administrative & support | 2022 |
| TVH Limited | Hospitality | 2013 |
| Tyrer's Property Ltd | Real estate | 2025 |
| Tyson Olley Ltd | Construction | 2018 |
| Ubode Property Limited | Construction | 2025 |
| Upper Cuts (Main Street) Ltd | Other services | 2025 |
| Urbansurgery Limited | Information & communication | 2022 |
| Urenus Ltd | Wholesale & retail | 2026 |
| Ursa Ryan Productions Ltd | Information & communication | 2020 |