Finally some good news...

After expert self-diagnosis I decided to give the experts a go, it turns out that the problem is not with my IT band after all! My right foot it the root of the problem, specifically the arch or lack of it... After much prodding, poking, twisting and pulling my Physio deduced that the arch support in my trainers is nowhere near adequate. It makes perfect sense; the arch on my right foot begins to ache a mile or so before my left knee begins to ache. It's a huge relief that I haven't damaged my knee or IT band. Looks like we're back on track for Cork!!