| Princeton Homes & Construction Ltd | Real estate | 2018 |
| Private Healthcare Advisers Limited | Financial services | 2006 |
| Propbel Investments Ltd | Real estate | 2021 |
| Prospero Projects Limited | Professional & scientific | 2009 |
| Purbeck Property Ltd | Real estate | 2026 |
| Pure EAR WAX Solutions Ltd | Health & social care | 2025 |
| Purple Donkey Limited | Real estate | 2022 |
| Quadrant Solutions Limited | Information & communication | 1994 |
| Quality Sino Merchandise Limited | Real estate | 1963 |
| Quay Engineering (Poole) Limited | Other services | 1981 |
| Quayside Fish & Chips Ltd | Hospitality | 2024 |
| R & a W Investments Ltd | Real estate | 2020 |
| R & P Griffin Limited | Professional & scientific | 2009 |
| R Baxter NDT Consultancy & Services Ltd | Professional & scientific | 2025 |
| R.A. Bowers Limited | Water & waste | 2004 |
| Rbld Property Ltd | Real estate | 2025 |
| RCH Lettings Limited | Real estate | 2014 |
| Recycling Plastic Matters Limited | Manufacturing | 2007 |
| Red One Developments Limited | Construction | 2004 |
| Reikan Technology Limited | Information & communication | 2004 |
| Respace Property Group Ltd | Real estate | 2025 |
| Rewellness Counselling Ltd | Health & social care | 2024 |
| Ridgeline Developments Ltd | Construction | 2019 |
| Ridley-Jones Ltd | Financial services | 2011 |
| Right Direction Coaching & Learning Ltd | Education | 2020 |
| Rntp Limited | Construction | 2014 |
| Roar Training Ltd | Professional & scientific | 2015 |
| Robbie Rocket Ltd | Arts & recreation | 2023 |
| Rock a Tots (UK) Ltd | Health & social care | 2019 |
| Roffey & Rusper Limited | Real estate | 2006 |
| Rojoco Design and Management Limited | Professional & scientific | 2016 |
| Rolls Re-Upholstery Limited | Other services | 2003 |
| Roobob Limited | Arts & recreation | 2023 |
| Rooms in Kent Ltd | Extraterritorial | 2016 |
| Roook Limited | Manufacturing | 2023 |
| Ross-Read Carpentry & Building Ltd | Construction | 2023 |
| Rowe & Co (UK) Ltd | Professional & scientific | 2018 |
| RPM Energy Consulting Limited | Professional & scientific | 2018 |
| RTT Transport Retail Ltd | Transport & logistics | 2025 |
| Ruth Haslam Limited | Administrative & support | 2025 |
| RV Construction (Poole) Ltd | Construction | 2017 |
| RV Plastering Ltd | Construction | 2016 |
| RVA Productions Ltd. | Information & communication | 2019 |
| S & J Jewellery Limited | Wholesale & retail | 2024 |
| S & L Creations Limited | Construction | 2001 |
| S.D.C. Self Storage Ltd | Transport & logistics | 2012 |
| Sableglade Limited | Households | 1986 |
| Sacuda Collectibles Ltd | Wholesale & retail | 2025 |
| Salix Estates (Construction) Limited | Construction | 2025 |
| Salix Estates (Dorset) Limited | Construction | 2024 |
| Salix Estates (Hampshire) Limited | Construction | 2024 |
| Salix Estates (Poole) Limited | Construction | 2026 |
| Salix Estates (Silchester) Limited | Construction | 2025 |
| Salix Estates Limited | Construction | 2023 |
| Samtani Future Limited | Financial services | 2019 |
| Samtani Investments UK Limited | Construction | 2019 |
| Sana Aggarwal Ltd | Health & social care | 2014 |
| Sandara Ltd | Manufacturing | 2016 |
| Sandbanks Construction Ltd | Construction | 2020 |
| Sandleheath Developments Limited | Construction | 2024 |
| Sarac Consultancy & Supply Ltd | Professional & scientific | 2021 |
| Scaffolding Solutions Dorset Ltd | Construction | 2023 |
| SCOOPE49 Limited | Other services | 2021 |
| Scoopit Ltd | Education | 2025 |
| Scout Legal Limited | Professional & scientific | 2005 |
| Scratch Limited | Professional & scientific | 2025 |
| Scribe Projects Limited | Construction | 2017 |
| Sea Glimpse Limited | Professional & scientific | 2011 |
| Seda-Environmental UK Ltd | Manufacturing | 2016 |
| Seed IT Consultancy Limited | Professional & scientific | 2012 |
| Selectahead Limited | Education | 2002 |
| SGB Developments Limited | Construction | 2005 |
| Shero Commerce Ltd | Information & communication | 2017 |
| Sifirdan Ltd | Hospitality | 2025 |
| Sigit Support Services Limited | Information & communication | 2021 |
| Signature IT Support LLP | | 2013 |
| Sika Solutions Ltd | Construction | 2017 |
| Silva-Carter Wines Limited | Wholesale & retail | 2014 |
| Silver Spray Maritime Ltd | Arts & recreation | 2012 |
| Simply LET Dorset Ltd | Other services | 2012 |
| Sinclair Homes Limited | Real estate | 2014 |
| Sirius Endeavour Ltd | Wholesale & retail | 2017 |
| Sjohn Services Limited | Transport & logistics | 2010 |
| Skalberg Properties Ltd | Real estate | 2023 |
| Skin Theory Aesthetics Ltd | Other services | 2025 |
| Skull and Laurel Limited | Manufacturing | 2019 |
| SLP Models Ltd | Manufacturing | 2025 |
| Smallnet Limited | Information & communication | 2000 |
| Smart Scaffolder (UK) Limited | Information & communication | 2021 |
| SMP Training & Consultancy Ltd. | Information & communication | 2015 |
| SN Events Group Ltd | Hospitality | 2025 |
| Snell Management Consultants Limited | Professional & scientific | 2017 |
| Snowcap Limited | Professional & scientific | 2007 |
| Solaris Solutions UK Ltd | Construction | 2025 |
| Somers House Designs Limited | Professional & scientific | 2013 |
| South Coast Computer Solutions Ltd | Administrative & support | 2020 |
| South Coast Learning Limited | Education | 2024 |
| South Coast Roast Limited | Hospitality | 2018 |
| South Coast Weddings Ltd | Other services | 2016 |
| South East Business Brokers Limited | Administrative & support | 2018 |