Ian Carter was arrested and sent down for stealing videos from Huddersfield nick relating to
sexual offences. He was found to have
illegal material in his home which he had taken from the
police station using
USB pen drives. Presumably, he could also have destroyed, fabricated, and otherwise
tampered with evidence; therefore, anyone who has submitted evidence to
Huddersfield Police might have had their evidence stolen or modified (the same rule applies to the evidence recovered from
Carter's cache, and evidence
taken by the police from
inside peoples homes).
This means that all evidence submitted by Huddersfield Police is suspect. They quite possibly have a ring of paedophiles working from their police station.
Also, because
Carter was using his computer to store
illegal images involving
children and animals, he was quite possibly a member of illegal (in the UK) websites, and probably shared the material he had taken with the other members.
Given the time and effort it takes to gather such evidence, it is a travesty to see it being abused in this fashion. It also explains why so little evidence makes it to the courts. Even if he worked alone, which I doubt, he has done untold damage.
Another factor is the recent disclosure that
USB devices can easily be hacked. The machines at the station could easily become infected with
BadUSB, and
Carter, wittingly or otherwise, becoming the
distribution vector by transporting the drives between his home and the
Huddersfield Police Station.