| 2 Simple | Houghton Mifflin Harcourt (HMH) (non-COBIS Supporting Member) |
| Anderson Education | Howarth of London Ltd |
| Anthony Millard Consulting | Independent Schools Examination Board |
| ASIS/SI-UK | Inspiring Futures |
| B Squared | Intcas |
| Baker Books International | Interactive Schools |
| BHM Architects | International Medical Group (IMG) |
| Blue Max Banner (non-COBIS Supporting Member) | iSAMS |
| BlueSky Education | ISC Research |
| Boardworks Ltd | ISUS Ltd |
| BrainPOP UK | itslearning A/S |
| BridgeU | John Catt Education Ltd
|
| British Council (non-COBIS Supporting Member) | Karen Ardley Associates |
| Browns Books for Students | Lindamood-Bell Learning Processes |
| Buckinghamshire Learning Trust | LSC Education |
| Cambridge House SEN Resources (non-COBIS Supporting Member) | m2r Education
|
| Cambridge International Examinations | Mallory International
|
| Cambridge University Press | Modern Governor |
| Capita SIMS International | Morleys (Bicester) Ltd (non-COBIS Supporting Member) |
| CEM, Durham University | National Foundation for Educational Research |
| CES Holdings Ltd | NutKase Ltd (non-COBIS Supporting Member) |
| CHQ Group Ltd | Outset Teacher Education |
| CJM Software | Oxbridge Applications |
| Collexi Ltd | Oxford International AQA Examinations |
| Compass Education Consultancy | Oxford University Press
|
| Consilium Education | Penta International |
| COSY | Piota School Apps |
| Council of International Schools | Protocol Education Ltd
|
| Dawsons Music Ltd | Relocate Global |
| Discover the World Education | Renaissance Learning
|
| Discovery Education | Renaissance Workplace Benefits |
| Double First Ltd | Rising Stars
|
| Dyslexia Matters | S+B UK Limited |
| Educate | Scanning Pens |
| EducationCity | School Website
|
| Education Development Trust | Schoolblazer
|
| EduKent | SchooliP
|
| Edvectus | Scientific and Chemical Supplies Ltd |
| Empowerment Education Ltd (non-COBIS Supporting Member) | Show My Homework
|
| EquipMySchool.com | Sing Up (non-COBIS Supporting Member)
|
| Eric Parry Architects | St Mary's University |
| eteach | Teachanywhere |
| Eye for Business | Teachers' Wealth
|
| Faria Systems Inc. | TES Global |
| Fieldwork Education | The School Planner Company |
| Finalsite | The School Uniform Specialists
|
| Findel Education | The Teaching Assistant College
|
| Firefly Learning | TIC Recruitment Ltd
|
| First News International Ltd | Titus Learning |
| Follett | TTS Group Ltd
|
| Frog Education | Twig World Ltd |
| Furlong Business Solutions Ltd | Virco Inc
|
| Future Foundations | Warwick Mann International |
| Gabbitas Education | WCBS |
| GL Education | Winter's School Finder Ltd |
| Global Investors Group Ltd | World Challenge |
| Harlequin Floors plc | Worldteachers Recruitment |
| High Performance Learning | Zeco Ltd |
| Hohenloher Spezialmoebelwerk Schaffizel GmbH & Co KG | |
