This stuff is great and I used it a lot when I was in Aus (where it is still widely available). Somewhat different to the standard Polyclar, in that it is formulated for addition to the kettle (end of boil) and also contains irish moss. Results are really good, and it is very easy to use - and you don't need to subsequently fine with Polyclar after fermenting, which saves a bit of hassle. It struck me yesterday when someone commented on my wort clarity that in fact I wasn't getting as good results immediately post boil now that I just use protafloc instead. Results overall are probably no better than using Polyclar post ferment, but the process way easier.
http://blog.murphyandson.co.uk/ideal-wi ... brewbrite/
And some wort of mine from Australia days, immediately after post-boil chilling:

So does any UK shop fancy getting some in? (Rob?) I'd definitely be keen!