| Precision Accountancy (Sussex) Ltd | Professional & scientific | 2005 |
| Preference Trusts and Wills Limited | Other services | 2007 |
| Premier Travel Service Centre Ltd | Wholesale & retail | 2022 |
| Prestige Appliances (Battle) Ltd | Wholesale & retail | 2023 |
| Preston Court Limited | Real estate | 1996 |
| Primaltalk Ltd | Information & communication | 2006 |
| Prime 5 Finance Limited | Administrative & support | 2018 |
| Prime Home AID UK Ltd | Construction | 2025 |
| Primo Building Solutions Ltd | Construction | 2024 |
| Pro Getters Ltd | Wholesale & retail | 2025 |
| Progress Network CIC | Administrative & support | 2020 |
| Project 78 Framing Ltd | Administrative & support | 2024 |
| PROJECT41 Ltd | Professional & scientific | 2015 |
| Prommex Limited | Administrative & support | 2025 |
| Pronest Living Ltd | Real estate | 2026 |
| Properties (Hastings) Limited | Construction | 1937 |
| Properties East Sussex Limited | Construction | 2016 |
| Property Fusion Limited | Real estate | 2013 |
| Proplumbing 1066 Ltd | Construction | 2024 |
| Proppa Pizza South East Ltd | Hospitality | 2022 |
| Prosper Marketing & Design Solutions Ltd | Administrative & support | 2015 |
| Prostyle Gardening & Home Services Ltd | Administrative & support | 2023 |
| Proton Construction Ltd | Construction | 2015 |
| Provence Authentique Limited | Professional & scientific | 1995 |
| Pumpintel Ltd | Professional & scientific | 2024 |
| Punchbowl Orchard Ltd | Agriculture & fishing | 2024 |
| Punchout Boxing Academy Ltd | Education | 2025 |
| Purnima Takeaways Ltd | Hospitality | 2023 |
| Purple Haven Ltd | Households | 2024 |
| PW Contracts Ltd | Construction | 2025 |
| PWS Care Dp/Th (Hastings) Ltd | Health & social care | 2020 |
| PWS Care Ltd | Health & social care | 2016 |
| PWS Care Th-Jh CIC | Households | 2026 |
| Pyramid Lifts Limited | Manufacturing | 2014 |
| Quantaris Limited | Information & communication | 2025 |
| Quest Motor Group Limited | Wholesale & retail | 2004 |
| QVM Limited | Construction | 2017 |
| R S Martin & SON Limited | Construction | 2021 |
| R&C Property Investors Limited | Real estate | 2025 |
| R.D.S. (Hastings) Limited | Wholesale & retail | 2003 |
| R4 Cleaning Limited | Administrative & support | 2019 |
| Racestart Limited | | 1933 |
| Rainbow Chaser Limited | Manufacturing | 2007 |
| Rainbow Cleaning Hastings Ltd | Administrative & support | 2022 |
| Rainbow Rentals East Sussex Limited | Real estate | 2025 |
| Rakeway Music Limited | Professional & scientific | 2007 |
| Rani-Uk Ltd | Hospitality | 2022 |
| Ravens Court RTM Company Limited | Households | 2023 |
| RB Classics Ltd | Wholesale & retail | 2019 |
| Ready Salted on Sea Ltd | Hospitality | 2023 |
| Reallies Entertainment Ltd | Information & communication | 2017 |
| Reallies Productions Limited | Information & communication | 2026 |
| Reallies Real Estate Group Limited | Real estate | 2024 |
| Rebuild Publishing Ltd | Information & communication | 2025 |
| Recreation Court RTM Company Limited | Households | 2024 |
| Redcon Fire Systems Ltd | Public administration | 2021 |
| Reel Wheels Media Ltd | Information & communication | 2023 |
| Regency House (ST Leonards) Limited | Households | 2007 |
| Remus House Properties Limited | Real estate | 2009 |
| Residents of 47 Baldslow RD Ltd | Households | 2022 |
| Resin Trade Services Limited | Construction | 2018 |
| Responsible Recycling Limited | Other services | 2020 |
| Rewild Consulting Ltd | Professional & scientific | 2026 |
| Rework Marketing Ltd | Professional & scientific | 2024 |
| RFE Developments Ltd | Construction | 2020 |
| RFE Surveys Ltd | Construction | 2016 |
| Rhea Finance Limited | Administrative & support | 2021 |
| Rhea Powell Psychology Services Ltd | Health & social care | 2024 |
| Rhythm Gupta Ltd | Real estate | 2025 |
| Ricciuti Ltd | Transport & logistics | 2021 |
| Richard Beau Nash RTM Company Limited | Households | 2013 |
| Richard Body & Co LLP | | 2013 |
| Richard Body Law Ltd | Professional & scientific | 2013 |
| Ripple Effect Solutions Ltd | Professional & scientific | 2011 |
| Rivnova Enterprises Ltd | Manufacturing | 2026 |
| RJS & Sons Property Services Ltd | Construction | 2018 |
| RLE the Party People Ltd | Other services | 2019 |
| Rmech Ltd | Professional & scientific | 2025 |
| RN Business Solutions Limited | Professional & scientific | 2017 |
| Robin of Alfriston Limited | Wholesale & retail | 2025 |
| Roche Jewels Limited | Manufacturing | 2025 |
| Rock Refurbishments Ltd | Construction | 2017 |
| Rockpool Properties Limited | Real estate | 2015 |
| Rolip Service Ltd | Administrative & support | 2025 |
| Roller Shutter Pro Limited | Manufacturing | 2015 |
| Roof Maintenance London Ltd | Construction | 2016 |
| Roots Commercial Landscapes Ltd | Administrative & support | 2025 |
| Rosefinch Management (Langney) Limited | Households | 2020 |
| Rossco Holdings Limited | Real estate | 2016 |
| Rover Sports Register Limited(The) | Other services | 1981 |
| Royal Blue Bakery Ltd | Manufacturing | 2025 |
| Royal Court (Apartments) Limited | Households | 1979 |
| Roycroft Labs Ltd | Information & communication | 2017 |
| RSD Heating Limited | Construction | 2017 |
| Rumbles World Limited | Real estate | 2007 |
| Rune Construction Ltd | Construction | 2025 |
| Rushmere Holdings Ltd | Real estate | 2024 |
| Rusper House RTM Company Limited | Households | 2021 |
| Ryann Limited | Wholesale & retail | 2025 |
| RYE Hand Car Wash Ltd | Wholesale & retail | 2023 |