If he hasnt done so already, he could take a look at the forum on www.policespecials.com - they have a whole section on recruitment issues and might have some tips on what to do or say during the process.
Their "its the law" section on the forum is also worth dipping into - if only to see the sort of things that they have to get to grips with on the job.
Their "its the law" section on the forum is also worth dipping into - if only to see the sort of things that they have to get to grips with on the job.