| Qdos Mintfinity Ltd | Information & communication | 2024 |
| QK2 Group Limited | Wholesale & retail | 2010 |
| Qleniq Ltd | Administrative & support | 2026 |
| Qreativity Ltd | Wholesale & retail | 2017 |
| Quality and Regulatory Services Limited | Information & communication | 2017 |
| Quality Wrestling Ltd | Arts & recreation | 2018 |
| Quan Glad Ltd | Health & social care | 2018 |
| Quick Lets Limited | Hospitality | 2009 |
| Quickdeal Ltd. | Wholesale & retail | 2017 |
| Quiet Quartet Limited | Households | 2004 |
| Qvis Cctv Limited | Information & communication | 2012 |
| R & D Brickwork Solutions Ltd | Construction | 2019 |
| R & H Carpentry Ltd | Construction | 2018 |
| R & K Autos Southern Limited | Wholesale & retail | 2011 |
| R B Grill Ltd | Hospitality | 2022 |
| R J Contract Services Ltd | Professional & scientific | 2022 |
| R&Ee (UK) Limited | Health & social care | 2018 |
| R-Gas Heating Ltd | Construction | 2023 |
| R.C.N GAS Ltd | Construction | 2024 |
| R2K2 Consulting Limited | Information & communication | 2025 |
| Racism BIN IT Limited | Manufacturing | 2024 |
| Racoon Partners Ltd | Professional & scientific | 2026 |
| RAD Global Limited | Professional & scientific | 2018 |
| Rafyand Ltd | Wholesale & retail | 2025 |
| Railchanger Limited | Administrative & support | 2024 |
| Rainscreen Systems Ltd | Construction | 2018 |
| Raise Fundraising and Events Ltd | Administrative & support | 2020 |
| Rajeshwari Machender Ltd | Wholesale & retail | 2025 |
| Rajpoot of Hayling Limited | Hospitality | 2015 |
| Randalls Farm Ltd | Agriculture & fishing | 2024 |
| Random Monkey Productions Limited | Arts & recreation | 2006 |
| Raptor Naval Architecture Ltd | Professional & scientific | 2012 |
| Rattle and Clank Ltd | Hospitality | 2025 |
| RAW Fusion PBK Ltd | Wholesale & retail | 2023 |
| RBA Architects Limited | Professional & scientific | 2013 |
| RBF Solutions Ltd | Construction | 2025 |
| RBG Global Limited | Professional & scientific | 2026 |
| RC Composites Ltd | Manufacturing | 2017 |
| RD Pipeline Solutions Ltd | Water & waste | 2025 |
| Rdwj Limited | Health & social care | 2015 |
| Real BGX Systems Limited | Construction | 2025 |
| Rebel Roastery Ltd | Wholesale & retail | 2024 |
| Recovery Includes Self Empowerment Limited | Health & social care | 2018 |
| Red Apple Solution Limited | Information & communication | 2009 |
| Red Catering on Wheels Limited | Hospitality | 2011 |
| Red Ginger Ltd | Hospitality | 2016 |
| Red Lodge Southsea Limited | Households | 2026 |
| Red Sparrow Limited | Wholesale & retail | 2015 |
| Redcliffe Gardens Residents Association (Clarendon Road) Southsea Limited | Real estate | 2001 |
| Redgate Wills and Probate Limited | Professional & scientific | 2019 |
| Redlands Residents Association Limited | Households | 2004 |
| Redleg Limited | Information & communication | 2003 |
| Redleif Ltd | Construction | 2019 |
| Redonred Advisory Ltd | Information & communication | 2025 |
| Redshank IT Services Limited | Information & communication | 2010 |
| Redshank Office Supplies Ltd | Wholesale & retail | 2018 |
| Redshank Online Ltd | Information & communication | 2015 |
| Redxpress Limited | Professional & scientific | 2015 |
| Regal Close (Cosham) RTM Company Limited | Households | 2020 |
| Rego Property (Southsea) Limited | Construction | 2023 |
| Remburto Limited | Hospitality | 2010 |
| Renewed Stars Ltd | Wholesale & retail | 2026 |
| Repor Limited | Information & communication | 2017 |
| Reset Robot Limited | Arts & recreation | 2017 |
| Reside Ashington Ltd | Construction | 2025 |
| Reside Construction Limited | Construction | 2010 |
| Reside Developments (Billingshurst) Ltd | Construction | 2019 |
| Reside Developments (Number Eleven) Ltd | Construction | 2013 |
| Reside Developments (Number Fifteen) Limited | Construction | 2015 |
| Reside Developments (Number Fourteen) Limited | Construction | 2015 |
| Reside Developments (Number Seventeen) Limited | Construction | 2015 |
| Reside Developments (Number Sixteen) Limited | Construction | 2015 |
| Reside Holdings Limited | Construction | 2016 |
| Reside Special Projects Limited | Health & social care | 2020 |
| Reside Strategic Land Limited | Construction | 2014 |
| Restaurant FORTY-6 Ltd | Hospitality | 2019 |
| Restaurants in Touch Southsea Ltd | Hospitality | 2018 |
| Reva (UK) Limited | Manufacturing | 2009 |
| Revive & Revolve Ltd | Manufacturing | 2025 |
| Revolution Craft Limited | Information & communication | 2009 |
| REW Company Limited | Real estate | 2018 |
| Reworked Tech Limited | Information & communication | 2025 |
| REX Rentus Ltd | Real estate | 2026 |
| Rexolute Ltd | Health & social care | 2024 |
| Rexton Pharma Ltd | Health & social care | 2025 |
| Reynolds & Sons Property Investment Ltd | Real estate | 2023 |
| Rezilient HQ Ltd | Wholesale & retail | 2026 |
| RGB Consulting Services Ltd | Professional & scientific | 2026 |
| Rgdb Ltd | Professional & scientific | 2024 |
| RGE Consultancy Limited | Manufacturing | 2012 |
| Rhino Audio Visual Limited | Professional & scientific | 2013 |
| Ribocore Biosolutions Ltd | Professional & scientific | 2024 |
| Richard Pollock Construction Limited | Construction | 2015 |
| Rico's 17 , Take Way and Delivery Ltd | Hospitality | 2023 |
| Ricoo Ltd | Hospitality | 2024 |
| Rigg Williams Limited | Information & communication | 2017 |
| RIO Deli & Cafe Ltd | Hospitality | 2024 |
| Rise PR Limited | Administrative & support | 2009 |
| Riusan Ltd | Construction | 2025 |
| River Spice Ltd | Administrative & support | 2017 |