perhaps the colleagues as you put it did not comprehend the basics of data protection, nor recall having to seek consent from the manager if they wanted to check non-client records and on a need-to-know basis. It turned out this person and another had a long history of looking up others case work where there was no need at all and there was a reason for this. They did this to undermine/gosspie the other persons work
It was standard procedure for the suty office we took turns to make a note, brief not records opened, EG,, Date/time/name of duty officer and example of reason, "client rang seeking w/l info.."
There are many "perhaps" but rules are rules and if you are incapable of understanding basic rules and or follow them, you are either not fit foe the purpose and or will get the sack.
Yes I did report them and glad I did as they were checking my work and work of three others and it was not for research purposes, hence the official warnings.