| R S R Construction (Wimborne) Ltd | Construction | 2003 |
| R S R Construction Limited | Construction | 1994 |
| R.G. Technical Limited | Professional & scientific | 1997 |
| Rawsthorne Ltd | Health & social care | 2020 |
| Reeve Heating & Plumbing Services Ltd. | Construction | 2014 |
| Reggieomar Ltd. | Real estate | 1985 |
| Remah Heating Ltd | Construction | 2020 |
| Rentoria Properties Limited | Real estate | 2024 |
| Resorsa and Butler Ltd | Wholesale & retail | 2021 |
| RG Classics Limited | Wholesale & retail | 2025 |
| Rhodes Facilities Management Ltd | Administrative & support | 2014 |
| Richmond House Southbourne (Management) Company Limited | Households | 1992 |
| Richmond Oak Surveyors Limited | Professional & scientific | 1999 |
| Richnic Developments Limited | Construction | 2008 |
| Right Recruiters Consulting Ltd | Professional & scientific | 2022 |
| RLM Letting and Management Ltd | Real estate | 2023 |
| Roam and Ride Ltd | Wholesale & retail | 2019 |
| Robert Thorne & Sons LLP | | 2002 |
| Roger Frank Curtis (Norwich) Limited | Real estate | 1954 |
| Roo-Tid Ltd | Wholesale & retail | 2017 |
| RPS (Dorset) Ltd | Construction | 2026 |
| RS Technical Ltd | Manufacturing | 2018 |
| RSR (Holdings) Ltd. | Construction | 1998 |
| RV Roofing and Building Ltd | Construction | 2024 |
| RWS Videography Limited | Information & communication | 2025 |
| S. P. Middleton Ltd | Administrative & support | 2008 |
| Safetech Property Services Ltd | Construction | 2020 |
| Salisbury IT Ltd | Information & communication | 2024 |
| Sandi's Safe Storage Ltd | Transport & logistics | 2025 |
| Sandringham Place (Freehold) Limited | Households | 2005 |
| Sani Solutions Limited | Construction | 2002 |
| Sasquatch Industries Ltd | Administrative & support | 2017 |
| Seaview Group Holdings Ltd | Hospitality | 2022 |
| Seemore Graphics Limited | Information & communication | 2009 |
| Serenity FOX Limited | Other services | 2025 |
| Sevecc Limited | Financial services | 2016 |
| Shaun Gale Building Contractors Limited | Construction | 2018 |
| Shdl 333 Ltd | Real estate | 2023 |
| Shipley BK Accounting Ltd | Professional & scientific | 2019 |
| Shipley Electrical & Building Solutions Ltd | Construction | 2014 |
| Sigos Consulting Ltd | Professional & scientific | 2024 |
| Silver Crest Developments Ltd | Construction | 2024 |
| Silver Linings Company (UK) Limited | Information & communication | 2009 |
| Simdent Limited | Health & social care | 2013 |
| Simms Technical Services Limited | Professional & scientific | 2023 |
| Sitrep Ltd | Professional & scientific | 2019 |
| SKILLUP2GETHER Ltd | Education | 2025 |
| Skypaws UK Ltd | Transport & logistics | 2024 |
| SLK Surgical Limited | Health & social care | 2016 |
| SM Nutritionals International Ltd | Health & social care | 2022 |
| Small Trees Software Ltd | Information & communication | 2019 |
| Snack Squadron Limited | Hospitality | 2023 |
| Soft Play (Ringwood) Ltd | Health & social care | 2025 |
| Solar Upholstery Services Ltd | Other services | 2016 |
| South Coast Hydrotherapy Centre Ltd | Other services | 2022 |
| Southern Blast Ltd | Manufacturing | 2013 |
| Sovereign Point Bath Ltd | Construction | 2020 |
| Speedbird Capital Ltd | Hospitality | 2024 |
| Spencer Homes Dorset Limited | Construction | 2019 |
| Splash Copywriters Ltd | Professional & scientific | 2011 |
| ST Aviation Services Ltd | Professional & scientific | 2015 |
| Start Riding! Limited | Education | 2013 |
| Stoneleigh (Canford Cliffs) Management Limited | Households | 1970 |
| Strand Street Management Limited | Households | 1991 |
| Studio Offset Ltd | Professional & scientific | 2021 |
| Summerhouse Brighter Thinking Limited | Professional & scientific | 2010 |
| Sunnyside Home and Garden Limited | Wholesale & retail | 2015 |
| Surrey Towers Freehold Limited | Households | 2006 |
| Surrey Towers Management (Bournemouth) Limited | Households | 1987 |
| Sutton & Vining Ltd | Construction | 2024 |
| SVL Adventures Ltd | Arts & recreation | 2023 |
| SVL Training and Consultancy Ltd. | Professional & scientific | 2012 |
| Swangreen Limited | Construction | 2007 |
| Swanmore 50 Management Limited | Households | 1995 |
| Swanmore Freehold Limited | Households | 2003 |
| SX Technologies Ltd | Wholesale & retail | 2018 |
| T & L Steelworks (Dorset) Ltd | Construction | 2023 |
| T&L Transport Ltd | Transport & logistics | 2018 |
| TAL Precision Engineering Limited | Manufacturing | 2007 |
| Talard Thai Limited | Wholesale & retail | 2000 |
| Tasty Bakes Bakery Ltd | Manufacturing | 2020 |
| Taylor Project Solutions (Southern) Limited | Professional & scientific | 2020 |
| Taylor’D 2U Ltd | Other services | 2024 |
| Tbba Verwood Ltd | Education | 2025 |
| Team Conveyancing Limited | Real estate | 2000 |
| Team Property Services Limited | Administrative & support | 2021 |
| Technical Construction Services Limited | Construction | 2019 |
| Termhouse (Widmer Court) Management Limited | Households | 1976 |
| THE Big Plant Company Limited | Administrative & support | 2008 |
| THE Biome Project C.I.C. | Information & communication | 2022 |
| THE Build Brain Ltd | Information & communication | 2023 |
| THE Clean Green Gardening Company Ltd | Administrative & support | 2025 |
| THE Cleaner Touch Ltd | Administrative & support | 2023 |
| THE Enchanted Shelf Ltd | Wholesale & retail | 2026 |
| THE Green GUY Ltd | Administrative & support | 2023 |
| THE Green Heat Team Ltd | Construction | 2006 |
| THE JOB Boxx Ltd | Wholesale & retail | 2020 |
| THE Mortgage Place Ltd | Financial services | 2016 |
| THE Natural Nursery Co Ltd | Wholesale & retail | 2023 |
| THE Oasis (Poole) Management Limited | Households | 1990 |