Publisher
- Home Office132
- Police Service of Northern Ireland50
- Routledge48
- The Scottish Government46
- Palgrave Macmillan44
- Orion40
- HarperCollins38
- Allison & Busby32
- Bello31
- C & R Crime26
- HarperCollins e-books25
- Pan23
- Northern Ireland Policing Board22
- Severn House21
- CRC Press20
- Penguin Books20
- Arrow18
- Mills & Boon18
- [Home Office]17
- Vintage16