The pings are looking pretty crap though however this isn't Spark either (see Smokeping), it is another ISP that also uses Global Gateway. I am also seeing rubbish pings and (some) packet loss on another connection in NZ that goes by a complete different route and uses different upstream providers so guess there is a cable cut or something.

Nothing that Spark can do, nothing that any other ISP can do. You've just got to note that unless if you own the complete fibre running from your PC right to the end destination that anything can go wrong and even if this was the case a cable cut can still occur or problems can still arise which would cause traffic to get routed elsewhere (if you had backup routes that was).

This is simply how the internet works. I've seen on your previous posts that you've complained multiple times about WOT on different ISP's but changing ISP's may fix things for a while however the problem will also eventually arise with them too. This isn't just WOT, this is happening with a VPS that I personally have hosted in Singapore which was seeing some packet loss to another VPS I also have in Australia and also Paris however due to the way TCP and Routing works this isn't an issue for what I need it for.

Afterall, you should still be able to play WOT fine. Your internet connection, the routing etc is simply working as designed.