Publisher
- Air Accidents Investigation Branch55
- Allison & Busby54
- Cambridge Scholars Publishing49
- Cornerstone Digital49
- HarperCollins e-books49
- HM Treasury46
- Hambledon Press46
- Vintage46
- HarperCollins45
- Department for Education44
- CRC Press42
- University of Wales Press40
- Learning Matters39
- Anthem Press38
- DWP, Department for Work and Pensions36
- HarperCollins Publishers36
- Hodder & Stoughton36
- Department for Communities and Local Government35
- Springer35
- Verso35