It's connected to the radio station, we're probably going to try and get some of the stuff we record on air, or at least make a podcast out of it for the NGI. As far as volunteering for it, at the moment you need to get to know the team and be invited along. Introduce yourself on the forum and build up a relationship until they eventually give you an invite. It does help if you know someone on the inside too

Right now they aren't doing any public investigations, but they are thinking about it in the future if there is demand, so you might wish to sign up to the forum and ask them about that.