| Primrose Support Limited | Health & social care | 2023 |
| Principal Property (East Anglia) Limited | Real estate | 2020 |
| PRINTFORGE3DX Ltd | Manufacturing | 2026 |
| Priory Farm Leisure Ltd | Hospitality | 2021 |
| Privatex Limited | Administrative & support | 2025 |
| PRJ Properties Limited | Real estate | 2016 |
| Pro Plumb Plumbing & Heating Limited | Construction | 2018 |
| Pro Property Solutions (EA) Limited | Real estate | 2025 |
| Pro Sure Electrical Limited | Construction | 2023 |
| Pro-Heat (East Anglia) Ltd | Construction | 2002 |
| Pro-Shot Limited | | 1990 |
| Productaid Limited | Administrative & support | 2019 |
| Proffs Holdings Limited | Financial services | 2020 |
| Proffs Limited | Professional & scientific | 2004 |
| Proper Payroll Ltd | Professional & scientific | 2025 |
| Property Hall Limited | Administrative & support | 2019 |
| Property Renting 2 Ltd | Real estate | 2026 |
| Property Renting Ltd | Real estate | 2020 |
| Property World Investments Limited | Real estate | 2003 |
| Prorail Management Ltd | Professional & scientific | 2013 |
| Prospect Carpentry Ltd | Construction | 2015 |
| Prosperwren Ltd | Real estate | 2025 |
| Protect and Preserve Ltd | Professional & scientific | 2025 |
| PRW Mechanical Engineering Limited | Professional & scientific | 2015 |
| Psbt Retail Ltd | Wholesale & retail | 2020 |
| PSH Enterprise Limited | Professional & scientific | 2018 |
| Ptolemaic Asset Management Limited | Administrative & support | 2017 |
| Puck Moha Ltd | Administrative & support | 2020 |
| Puddle Paws Limited | Wholesale & retail | 2025 |
| PUP PUP Ltd | Administrative & support | 2025 |
| Pure Aesthetics & Wellness Ltd. | Health & social care | 2025 |
| Pure Marine Limited | Wholesale & retail | 2010 |
| Pure Nexus Limited | Information & communication | 2019 |
| Purest Support Limited | Health & social care | 2019 |
| Purples Properties Limited | Real estate | 2013 |
| Puurestream Limited | Wholesale & retail | 2025 |
| PVM Building Control Services Ltd | Professional & scientific | 2004 |
| PW Groundworks Limited | Construction | 2024 |
| Pyckaert Properties Limited | Real estate | 2015 |
| Quality and Inspection Engineers Ltd | Professional & scientific | 2007 |
| Quality IS Inclusive Training Ltd | Public administration | 2024 |
| Quantinium Limited | Information & communication | 2015 |
| Quantrill Contractors Limited | Construction | 2016 |
| Quantrill Properties (East Anglia) Ltd | Real estate | 2026 |
| Quantrill Properties Limited | Real estate | 1960 |
| Quantum Nuclear Services Limited | Other services | 2009 |
| Quayside Financial Planning Ltd | Professional & scientific | 2020 |
| Quenly Ltd | Wholesale & retail | 2025 |
| Quindel Holdings Limited | Real estate | 1977 |
| Quinnell Consultancy Ltd | Professional & scientific | 2025 |
| R & G Cooper (Fabrications) Limited | Manufacturing | 2009 |
| R & G Cooper Engineering Limited | Construction | 2003 |
| R & G Cooper Properties Limited | Real estate | 2013 |
| R & P Metalwork Limited | Manufacturing | 2009 |
| R & P Property Holdings Limited | Real estate | 2021 |
| R & R Property Support Services Limited | Administrative & support | 2020 |
| R & S Autoservices Limited | Wholesale & retail | 2009 |
| R & S Meen Auto Repairs Limited | Professional & scientific | 2004 |
| R Adams GAS Services Ltd | Construction | 2025 |
| R Adams Lettings Ltd | Real estate | 2023 |
| R B Carpet & Flooring Ltd | Construction | 2025 |
| R C Moore Limited | Administrative & support | 2007 |
| R D Parmenter Limited | Wholesale & retail | 2012 |
| R Dragon 501 Ltd | Hospitality | 2024 |
| R E Spurgeon Builder Limited | Construction | 2002 |
| R G Smith Holdings Ltd | Financial services | 2021 |
| R Hales Developments Ltd | Construction | 2018 |
| R J Pryce Holdings Limited | Financial services | 2022 |
| R K J Plumbing & Heating Limited | Construction | 2024 |
| R King Resources Limited | Real estate | 2012 |
| R M Building and Contracting Services Limited | Construction | 2020 |
| R M M C Services Ltd. | Extraterritorial | 2015 |
| R T Trading Ltd | Wholesale & retail | 2019 |
| R Turrell Limited | Construction | 2011 |
| R&G Cooper (Projects) Ltd | Administrative & support | 2008 |
| R&H Cost Management Ltd | Administrative & support | 2020 |
| R&R Steering Ltd | Wholesale & retail | 2021 |
| R.A.P Lettings Ltd | Real estate | 2023 |
| R.J. Green (Properties) Limited | Construction | 1991 |
| R.J. Pryce & Co. Limited | Wholesale & retail | 1955 |
| R.Loades Limited | Hospitality | 1958 |
| R.M. Tubby (Builders) Limited | Construction | 1977 |
| RA Integrity Solutions Limited | Professional & scientific | 2016 |
| Race-Hydro Limited | Professional & scientific | 1995 |
| Rachel Robson Suffolk Limited | Professional & scientific | 2021 |
| Racket Sports Academy CIC | Arts & recreation | 2019 |
| Raconteur Theatre CIC | Arts & recreation | 2022 |
| Radha Construction Limited | Real estate | 2025 |
| Radha Developments Limited | Real estate | 2016 |
| Radhaus Limited | Arts & recreation | 2016 |
| Rafa Kebap Limited | Hospitality | 2025 |
| RAH Inspections Ltd | Manufacturing | 2025 |
| Rainbow Day Nursery Limited | Education | 1990 |
| Rainbows Transport Ltd | Transport & logistics | 2017 |
| RAJ Mahal Limited | Hospitality | 2025 |
| Raleigh Properties Ltd | Real estate | 2021 |
| Ramp and Mobility Solutions Ltd | Construction | 2021 |
| Raptor Engineering Plant and Agricultural Ltd | Professional & scientific | 2022 |
| RAS Engineering Design Ltd | Professional & scientific | 2024 |
| Rawmores Retail Limited | Wholesale & retail | 2020 |