| Relate Care Limited | Health & social care | 2018 |
| Reoffice Ltd | Wholesale & retail | 2025 |
| Resinate Ltd | Construction | 2023 |
| RF Star Communications Ltd | Information & communication | 2013 |
| Richings Electrics Ltd | Construction | 2016 |
| Right Lite Limited | Manufacturing | 2012 |
| Rio's Retreat Ltd | Hospitality | 2019 |
| Riocht Consulting Ltd | Professional & scientific | 2021 |
| RJ Spray Finishing Ltd | Construction | 2025 |
| RJG Site Engineering and Management Ltd | Administrative & support | 2014 |
| RM Gweek Limited | Real estate | 2023 |
| RM Plaidy Limited | Real estate | 2023 |
| Roark Ronald Mcmaster Ltd | Administrative & support | 2022 |
| ROB Allan Limited | Administrative & support | 2006 |
| ROB Brew Limited | Professional & scientific | 2023 |
| RS Specialist Services Ltd | Professional & scientific | 2002 |
| RSL Autos Limited | Wholesale & retail | 2017 |
| Rsrsales Limited | Hospitality | 2025 |
| S UDY Limited | Construction | 2006 |
| S. Dolling Electrical Services Ltd | Construction | 2012 |
| S.D.F. Carpentry Limited | Construction | 2010 |
| Sable-Miles Ltd. | Professional & scientific | 1995 |
| Sailtrack Limited | Information & communication | 2007 |
| Sajer Services Limited | Information & communication | 2006 |
| Salon Matters Ltd | Other services | 2023 |
| Salthorse Stud Farm Limited | Agriculture & fishing | 2008 |
| Sandon Solutions Ltd | Professional & scientific | 2020 |
| Savvy Conversations Ltd | Professional & scientific | 2003 |
| SBB Properties Ltd | Construction | 2023 |
| Scream Limited | Information & communication | 2002 |
| Screendisplay Ltd | Professional & scientific | 2024 |
| SDM Translations Ltd | Professional & scientific | 2015 |
| Seagull Court Management Limited | Real estate | 2002 |
| Seascape Ventures Limited | Financial services | 2022 |
| Selective Foods (South) Ltd | Hospitality | 2020 |
| Sequel Glitter Fabrics Limited | Manufacturing | 1989 |
| SGZ Distribution Ltd | Wholesale & retail | 2026 |
| Silk Status Sourcing Limited | Wholesale & retail | 2025 |
| SILVERTREES2025 Limited | Real estate | 2025 |
| Simon Dwyer Limited | Wholesale & retail | 2015 |
| Simusmell Ltd | Education | 2017 |
| SIX Excel Limited | Real estate | 2016 |
| SIX Planes Games Ltd | Wholesale & retail | 2021 |
| Skiff Sports Limited | Wholesale & retail | 2020 |
| Skylight Marketing Consultancy Ltd. | Administrative & support | 2019 |
| Slipstream Automotive Ltd | Wholesale & retail | 2019 |
| SLR Providers Ltd | Education | 2023 |
| Smart Paws Grooming Ltd | Information & communication | 2024 |
| Smartlook Home Improvements Ltd | Construction | 2024 |
| Smith Howie Consulting Ltd | Professional & scientific | 2019 |
| Smoother Moves Limited | Real estate | 2001 |
| Solar Maax Limited | Administrative & support | 2009 |
| Solar Mobile Chargers Limited | Wholesale & retail | 2012 |
| Solaris Mobiles Ltd | Wholesale & retail | 2020 |
| South Coast Workshop Limited | Wholesale & retail | 2015 |
| Southbourne Barber Ltd | Other services | 2026 |
| Southdowns Water Co Ltd | Manufacturing | 2013 |
| Southern Enduro Limited | Arts & recreation | 2015 |
| Southern Management (Portsmouth) Ltd | Real estate | 2020 |
| Southernhay Admin Limited | Health & social care | 2025 |
| Southmoor (Havant) Properties Limited | Real estate | 1960 |
| Spinnaker Home Improvements Limited | Construction | 2018 |
| ST Anne's Havant Management Company Limited | Households | 2022 |
| Stafford House Management Company Limited | Households | 1995 |
| Starbrook Leisure Ltd | Administrative & support | 2013 |
| Statistics Ltd | Information & communication | 2014 |
| Stay Salty Ltd | Information & communication | 2026 |
| Steamiq Limited | Professional & scientific | 2025 |
| Steve Radcliffe Associates Ltd | Professional & scientific | 2016 |
| Stir Crazy Limited | Real estate | 2022 |
| Streamlined Energy Limited | Information & communication | 2021 |
| Strix Media Group Ltd | Information & communication | 2024 |
| Structure 360 Limited | Construction | 2024 |
| Student Studygram Ltd | Arts & recreation | 2021 |
| Studio Bronte Pilates Limited | Arts & recreation | 2026 |
| Stuzi Fresh & Clean Limited | Administrative & support | 2026 |
| SUE Foster Interiors Limited | Wholesale & retail | 2008 |
| Suhu Properties Limited | Real estate | 2004 |
| Sulis Strata Limited | Other services | 2003 |
| Sunday Roastery Ltd | Manufacturing | 2015 |
| Sunshine Taverns Limited | Hospitality | 2021 |
| Sussex Bespoke Carpentry Ltd | Manufacturing | 2022 |
| Swim Maison Ltd | Education | 2021 |
| T & C Precision Limited | Manufacturing | 1989 |
| Tammz Holdings Ltd | Real estate | 2019 |
| Tammz Property Holdings Ltd | Real estate | 2025 |
| Tandem Energy Services Ltd | Professional & scientific | 2026 |
| Taskforce Maintenance Limited | Construction | 2000 |
| TCH Roofing Limited | Construction | 2025 |
| TGB Care Ltd | Health & social care | 2018 |
| Thao HO Thanh Ltd | Other services | 2024 |
| THE Architects Design Ltd | Professional & scientific | 2015 |
| THE Beach Company Activities Bracklesham Limited | Arts & recreation | 2025 |
| THE Beach Company Activities Ltd | Arts & recreation | 2022 |
| THE Beer Explorers Ltd | Information & communication | 2024 |
| THE Blue Bell Inn (Emsworth) Limited | Hospitality | 2004 |
| THE Business Growth Script Company Limited | Information & communication | 2014 |
| THE Dovetail Trailer Company Limited | Manufacturing | 1990 |
| THE Druids Arms (Portsmouth) Ltd | Hospitality | 2024 |
| THE Emsworth Computer Company Limited | Information & communication | 1996 |