@ (Some) MOST coppers are bent!
Any job that is incentivised stands the risk of exaggerated reports by the performer of the task.
The police are supposed to be an uninterested enforcer of statutes, to report accurately, and without lies or enhancement, the truth to a court.
If these particular Plods can't even be trusted to behave fairly between themselves, keeping in mind the maxim "honour amongst thieves", how can any court trust their sworn evidence which is even more degraded by their reprehensible failure even to answer questions honestly?
Why do they still hold their jobs, their rank or their pensions? In any self-respecting organisation the offenders would have been given the Order of the Boot.
There again, we're discussing Plod, so those criteria don't apply.