| Company Name | Entity type | Parent/Subsidiary/Independent | Headquarters | No. of Employees | Annual Revenue ($M) | |
|---|---|---|---|---|---|---|
| University of Southampton | Institution | Parent | United Kingdom | XYZ | XYZ | |
| Ralph Lauren Corp | Public | Parent | United States of America | 14,900 | 6,444 | |
| Hamptons Luxury Homes, Inc. | Private | Parent | United States of America | XYZ | XYZ | |
| Southampton Photonics | Private | Independent | United Kingdom | XYZ | XYZ | |
| Quetzal Energy Ltd. | Private | Independent | Canada | XYZ | XYZ | |
| Leonardo UK Ltd | Private | Subsidiary (of Leonardo SpA) | United Kingdom | 7,540 | 2,599 | |
| University Hospital Southampton NHS Foundation Trust | Institution | Subsidiary (of NHS England ) | United Kingdom | XYZ | XYZ | |
| Southampton Hospital | Institution | Subsidiary (of Stony Brook University ) | United States of America | XYZ | XYZ | |
| Southampton International Airport Ltd | Private | Subsidiary (of AGS Airports Ltd ) | United Kingdom | XYZ | XYZ | |
| Environmental Tectonics Corp | Public | Parent | United States of America | 221 | 26 | |
| The Unite Group Plc | Public | Parent | United Kingdom | 1,775 | 320 | |
| Seaspan Corporation | Private | Subsidiary (of Atlas Corp ) | Hong Kong | 6,000 | XYZ | |
| Synairgen Plc | Public | Parent | United Kingdom | 30 | XYZ | |
| Southampton FC | Private | Independent | United Kingdom | XYZ | XYZ | |
| Southampton Podiatry Centre | Private | Independent | United Kingdom | XYZ | XYZ | |
| Southampton General Hospital | Institution | Subsidiary (of NHS England ) | United Kingdom | XYZ | XYZ | |
| Southampton City Council | Government | Independent | United Kingdom | XYZ | XYZ | |
| Southampton Football Club Ltd | Private | Subsidiary (of Sport Republic ) | United Kingdom | XYZ | XYZ | |
| Southampton Financial Inc | Private | Parent | Canada | XYZ | XYZ | |
| National Oceanography Centre, Southampton | Institution | Independent | United Kingdom | XYZ | XYZ | |
| PERINI SERVICES SOUTHAMPTON MA | Private | Independent | United States of America | XYZ | XYZ | |
| Southampton Cargo Handling Limited | Private | Independent | United Kingdom | XYZ | XYZ | |
| Belmont Peanuts of Southampton Inc | Private | Independent | United States of America | XYZ | XYZ | |
| Southampton Geothermal Heating Company Ltd | Private | Independent | United Kingdom | XYZ | XYZ | |
| NIHR Southampton Biomedical Research Centre | Private | Subsidiary (of National Institute for Health and Care Research ) | United Kingdom | XYZ | XYZ | |
| NIHR Southampton Clinical Research Facility | Institution | Independent | United Kingdom | XYZ | XYZ | |
| Research and Innovation Services - University of Southampton | Institution | Subsidiary (of University of Southampton ) | United Kingdom | XYZ | XYZ | |
| University Hospital Southampton NHS Foundation Trust Dining Services | Private | Independent | United Kingdom | XYZ | XYZ | |
| Southampton Isle of Wight and South of England Royal Mail Steam Packet Ltd | Private | Parent | United Kingdom | XYZ | XYZ | |
| Carnival plc | Public | Parent | United Kingdom | XYZ | XYZ | |
| Atdbio Ltd | Private | Subsidiary (of Biotage AB ) | United Kingdom | XYZ | XYZ | |
| TC BioPharm Ltd | Private | Subsidiary (of TC BioPharm (Holdings) plc ) | United Kingdom | XYZ | XYZ | |
| Quilter Business Services Limited | Private | Subsidiary (of Quilter Plc ) | United Kingdom | XYZ | XYZ | |
| Blackthorn Health Centre | Private | Independent | United Kingdom | XYZ | XYZ | |
| Passport Technology Inc | Private | Parent | United States of America | XYZ | XYZ | |
| Motion Robotics | Private | Independent | United Kingdom | XYZ | XYZ | |
| Horizon Power and Energy Ltd | Private | Independent | United Kingdom | XYZ | XYZ | |
| SETsquared | Institution | Independent | United Kingdom | XYZ | XYZ | |
| Highfield Diagnostics | Private | Independent | United Kingdom | XYZ | XYZ | |
| Carrick Resources Ltd | Private | Independent | United Kingdom | XYZ | XYZ | |
| Sunshine Foundation | Institution | Independent | United States of America | XYZ | XYZ | |
| Solent University | Institution | Independent | United Kingdom | XYZ | XYZ | |
| Vail Williams LLP | Private | Parent | United Kingdom | XYZ | XYZ | |
| Elliott Brothers, Ltd. | Private | Independent | United Kingdom | XYZ | XYZ | |
| Advantec Agency | Private | Independent | United Kingdom | XYZ | XYZ | |
| BSA Brands (UK) Limited | Private | Independent | United Kingdom | XYZ | XYZ | |
| Runloop Ltd | Private | Independent | United Kingdom | XYZ | XYZ | |
| Wight Shipyard Co Ltd. | Private | Parent | United Kingdom | XYZ | XYZ | |
| Koozai Ltd | Private | Independent | United Kingdom | XYZ | XYZ | |
| Wessex Cardiology LLP | Private | Independent | United Kingdom | XYZ | XYZ |
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