Quick trip up the my local C&M with my neighbour in his yellow VX (gratuitous pic below) confirmed that I have one, possibly two coolant leaks. It's just a few drips when hot, I suspect at the joints but a very brief feel around didn't yield anything. Coolant level hasn't dropped noticeably, so I'm inclined to just keep an eye on it for the time being, is that foolish?
I always just seem to be in a rush when I take the car out, and that's probably the only time I'm going to be able to find the evidence of its location.
I dunno what it is with the coolant system but
@dan found a split in my header tank last time and it has played up in the past, so it seems to me like maybe it's having to work pretty hard / high pressure? So maybe it's loading the joints a bit more.