Not a particularly important account, but there's a fair bit of this stuff about.
I think, on balance, it's unlikely Wootton has bombshell secrets on Kath Viner. More likely a combination of him not being important enough and wanting to see more from Byline News (which I've noticed be a bit crap a few times, though I'll forgive it that very quickly if it's got this right). It's not exactly uncommon for stuff to be in eg Private Eye for some time before it gets taken up more widely. That may happen this time.