| Remotesens Limited | Wholesale & retail | 2024 |
| Repair Care Lettings Maintenance Ltd | Construction | 2024 |
| ROB Armstrong Joinery Limited | Construction | 2007 |
| ROB Connolly Estates Limited | Administrative & support | 2014 |
| Rolling Stock Electrical Engineering Ltd | Construction | 2017 |
| Rural Recording Ltd | Information & communication | 2025 |
| RWP Associates Ltd | Health & social care | 2010 |
| Sarah Hawkins Hair Studio Limited | Other services | 2003 |
| Schlegel Acquisition Holdings Limited | Professional & scientific | 2006 |
| Schlegel Building Products Limited | Extraterritorial | 1978 |
| Schlegel Limited | Manufacturing | 2006 |
| Skeeih Limited | Professional & scientific | 2016 |
| Smartglaze Home Improvements Limited | Construction | 2011 |
| Spanner MAN Mobile Mechanic Ltd | Wholesale & retail | 2015 |
| Squire-Needham Limited | Professional & scientific | 2012 |
| Stephen Wager Limited | Other services | 2013 |
| T Grace Electrical Limited | Construction | 2004 |
| Terry's Taxis Limited | Transport & logistics | 2003 |
| THE Lantern (Milton Keynes) Limited | Hospitality | 2015 |
| Tyman Financial Services Limited | Financial services | 2017 |
| VC Developments Limited | Construction | 2015 |
| View-Tec Services Limited | Wholesale & retail | 2004 |
| Wayne Steven Financial Solutions Limited | Financial services | 2014 |
| Wrightway Pressure Cleaning Services Limited | Administrative & support | 2004 |