Hey everyone! Well...I working through the long list of crap events I get invited to on Facebook (no offense) and one event stood out....'Facebook is Hiding You'. I clicked it to see what it was all about. It turns out that the reason why I was no longer in the loop with my distant friends was in fact down to a Facebook update which only shows people I have interacted with in the last 2 weeks on my newsfeed.
This can be changed though....by editing your options so your newsfeed includes all your friends. Viola!