| Quayside Court (Swanage) Ltd | Households | 2003 |
| Quayside Scaffolding Limited | Construction | 2007 |
| Queens Park Garage Ltd | Wholesale & retail | 2003 |
| Queensgate Properties (UK) Limited | Financial services | 2003 |
| Quest House Management Company Limited | Households | 2003 |
| Questbronze Limited | | 1985 |
| Quiltfield Limited | | 1982 |
| R & M Grafton Limited | Professional & scientific | 2002 |
| R & S Construction (Dorset) Limited | Construction | 2002 |
| R & W Installations Limited | Administrative & support | 2004 |
| R a Network Partnership Limited | Professional & scientific | 2005 |
| R P W Trade Services Limited | Extraterritorial | 1998 |
| R S T Services Limited | Wholesale & retail | 2003 |
| R W Plastics (UK) Limited | Manufacturing | 1995 |
| R White Holdings Limited | Financial services | 2020 |
| R&A Electrical & Mechanical Services Ltd | Construction | 2023 |
| R.E. Pearce Properties Limited | Construction | 1984 |
| R.G. Frozen Food Distributors Limited | Wholesale & retail | 1968 |
| R.H. Woodhouse & SON | | 1992 |
| R.N.L.I. (Sales) Limited | Wholesale & retail | 1987 |
| Radikls Limited | Information & communication | 1997 |
| Rainbow Paints Ltd | Manufacturing | 2007 |
| RAO Bro's Ltd | Wholesale & retail | 2025 |
| Rawxtan Limited | Manufacturing | 2024 |
| RBA Mueller Ltd. | Professional & scientific | 1999 |
| RDP Flooring Limited | Construction | 2003 |
| Readybus (Harrow) Limited | Transport & logistics | 2003 |
| Reaper & Co. Ltd | Information & communication | 2026 |
| Rebel Competitions Ltd | Arts & recreation | 2025 |
| Recode Systems Ltd | Other services | 2022 |
| Red Croft Homes Limited | Construction | 2006 |
| Redfern Natural History Productions Limited | Information & communication | 2006 |
| Redgate House Management Limited | Households | 2000 |
| Redhill Electronics Limited | Information & communication | 1996 |
| Regis Decorations Limited | | 1950 |
| Relco Construction (Dorset) Limited | Wholesale & retail | 1997 |
| Relph & Williams Limited | | 1957 |
| Renegade Electron Limited | Information & communication | 1992 |
| Rentell Property Sourcing Ltd | Real estate | 2025 |
| Rest & Play Footwear Limited | Wholesale & retail | 2003 |
| RG Connections Limited | Professional & scientific | 2006 |
| Rheasam Limited | Construction | 2002 |
| Richard Blackmore Ltd | Professional & scientific | 2003 |
| Richard Godsell (Christchurch) Limited | Real estate | 2006 |
| Richard Godsell (Southbourne) Limited | Real estate | 2006 |
| Richard Pikesley Ltd | Arts & recreation | 2007 |
| Richmond Heating & Plumbing Ltd | Construction | 2007 |
| Ridge Yachting Centre Limited | Manufacturing | 1965 |
| Right Over the Top Limited | Other services | 2002 |
| RIO Drinks Limited | Extraterritorial | 1957 |
| RJC Domestic Plumbing Services Limited | Construction | 2006 |
| RMS Builders Limited | Construction | 2001 |
| ROB Oldridge Limited | Construction | 2004 |
| Robert Froud Limited | Transport & logistics | 2003 |
| Rockley Watersports Limited | Administrative & support | 1999 |
| Rockmaze Limited | Real estate | 1991 |
| Rococo Decorating Limited | Construction | 2007 |
| Rogan-It UK Ltd | Information & communication | 2005 |
| Roger Mcghee Estate Agents Ltd. | Real estate | 2008 |
| Roger Taylor Classic Cars | | 1996 |
| ROH Media Limited | Arts & recreation | 2007 |
| Roland Tilley Limited | Construction | 2003 |
| Room Maker Ltd | Construction | 2002 |
| Rose and Stevens Limited | Construction | 2002 |
| Rosenwood Ltd | Real estate | 2025 |
| Roundham Heights Limited | Administrative & support | 2002 |
| Roundworld Services Limited | Construction | 1997 |
| Rowland Sandwith Limited | Manufacturing | 1946 |
| Royal Arcade Limited | Real estate | 1982 |
| Roysdean Manor Management Company Limited | Real estate | 2003 |
| RSH Office Ltd | Other services | 2023 |
| RSL Upvc Window Systems Ltd | Manufacturing | 2007 |
| RSL Windows & Conservatories Ltd | Construction | 2006 |
| Rubicon Staffing Solutions Limited | Administrative & support | 2003 |
| Russell Scaffolding Limited | Construction | 2003 |
| Russwood (Exeter) Limited | Wholesale & retail | 2006 |
| S a V Contracts Limited | Construction | 2003 |
| S B Lacey Limited | Professional & scientific | 2013 |
| S J Dubas Limited | Construction | 2000 |
| S J Graham Plumbing & Heating Ltd | Construction | 2003 |
| S M Helson Plumbing & Heating Limited | Construction | 2006 |
| S&Sb Properties & Investments Limited | Construction | 2004 |
| S. & D. Carpentry Ltd. | Manufacturing | 2003 |
| S.P. Martin Limited | Professional & scientific | 2006 |
| Sabir ALI Empire Xtra Ltd | Wholesale & retail | 2025 |
| Sabre Marine Limited | Professional & scientific | 1993 |
| Salisbury Court (Management) Limited | Households | 1981 |
| SAM Scaffolding (Dorset) Limited | Construction | 2005 |
| Samantha Michaels Consulting Limited | Other services | 2007 |
| Samay 81 Ltd | Wholesale & retail | 2021 |
| Samily Care Ltd | Health & social care | 2003 |
| Sampson Contractors Ltd | Construction | 2007 |
| SAN Michel (Torquay) Limited | Households | 1996 |
| Sandbourne Developments Limited | Construction | 2003 |
| Sandbourne Properties Limited | Construction | 1977 |
| Sandown Dorset and Wiltshire Limited | Wholesale & retail | 1993 |
| Satmedia Electronics Ltd | Wholesale & retail | 2016 |
| Savanna Trading Limited | Wholesale & retail | 2000 |
| Schouten Ltd | Hospitality | 2005 |
| Scientific Design and Development Limited | Manufacturing | 1996 |