Wheelie,
Sorry mate, but just because you don't currently know something doesn't make it wrong.
The site shows the Sync speed reported at the router for both upstream and downstream but the main focus of this post is not about the sync speed, it's about the IP speed which as I stated before is only known by the BT site, referred to as the IP profile.
Here is the URL:
http://test.speedtester.bt.com:50301/ (From the bookmark I have on home pc)
But as I also said previously you will need your Sky username from the router, the discussion of which isn't permitted here which is why I omitted the URL in the first place.
I also still don't agree with this being in the router forum, I think its more of a service issue and is likely the reason lots of people will cancel whilst still inside their 8 days service.