| 17Cicada Limited | Nottingham | Skilled Worker | Scientific Research | View |
| 272BIO Ltd | Uckfield | Skilled Worker | Scientific Research | View |
| 3F BIO LTD | Glasgow | Skilled Worker | Scientific Research | View |
| 3S Knowledge Limited | Warwick | Skilled Worker | Scientific Research | View |
| 42 Technology Limited | St Ives | Skilled Worker | Scientific Research | View |
| 4BIO Ventures Management Limited | London | Skilled Worker | Scientific Research | View |
| Abcam Limited | Cambridge | Global Business Mobility: Senior or Specialist Worker | Scientific Research | View |
| Abcam Limited | Cambridge | Skilled Worker | Scientific Research | View |
| ABSOLUTE AI LTD | London | Skilled Worker | Scientific Research | View |
| Abzena (Cambridge) Limited | Cambridge | Skilled Worker | Scientific Research | View |
| Accession Therapeutics Limited | Abingdon | Skilled Worker | Scientific Research | View |
| Accunea Ltd | Kidderminster | Skilled Worker | Scientific Research | View |
| Achieve Pharma UK Limited | Henley-On-Thames | Skilled Worker | Scientific Research | View |
| Achilles Therapeutics UK Limited | London | Skilled Worker | Scientific Research | View |
| Achilles Therapeutics UK Limited | London | Global Business Mobility: Senior or Specialist Worker | Scientific Research | View |
| ACROBIOSYSTEMS LIMITED | South Croydon | Skilled Worker | Scientific Research | View |
| ACT Blade Ltd | Edinburgh | Skilled Worker | Scientific Research | View |
| Actuation Lab | Bristol | Skilled Worker | Scientific Research | View |
| Acurable Ltd | London | Skilled Worker | Scientific Research | View |
| Adaptate Biotherapeutics Limited | London | Skilled Worker | Scientific Research | View |
| Adaptimmune Limited | Abingdon | Skilled Worker | Scientific Research | View |
| Adaptix Limited | Oxford | Skilled Worker | Scientific Research | View |
| ADC Therapeutics (UK) Limited | London | Skilled Worker | Scientific Research | View |
| AEH Innovative Hydrogel | Manchester | Skilled Worker | Scientific Research | View |
| Aeon Energy Ltd | London | Skilled Worker | Scientific Research | View |