I remember at the time, it was said Ofcom were investigating. But I have heard nothing more, so I assume that was a false claim.
I do not understand why the amateurs local to DY, especially the licence holder, are not doing more. It is not exactly difficult to track someone down. It only takes a few people to quietly monitor the input, to see what area they are in & then a few minutes of someone's time to define the location exactly. And after that an official complaint can be made & if that fails to achieve anything, then often a naming with location often does the trick, as these fools are cowards.
Also normally the types of idiots who jam up repeaters are very low IQ, so they often give themselves away. I once heard someone keying up on the Norwich 2 meter repeater (GB3NB) When suddenly someone approached the mike keyers vehicle & used his christian name & the fool only replied with the mike keyed!!!! It was only a few seconds of the idiots voice, but it went with a name & it was as clear as if they were in the same room as me
He did look very very uncomfortable when I had a conversation about what I had heard with another amateur in front of him, but with out naming him.
The other amateur was in on the conversation & we had decided to let him know we knew & hopefully stop him.