Hey mate - cheers for the detailed reply .. I think I screwed up a couple of questions by misreading height v/s altitude when reviewing the plates (These seemingly minor differences can easily mean the diff between passing and failing) ..fuel calculations based on the TAF/TTF can be a tease .but I think I was ok on those ..Strangely, my major trouble areas seems to be around recency requirements and equipment needed for IFR CHarter vs Pvt etc .. One of my questions on recency contained options such as '85 days vs 45 days - I had never seen a question like that across Bob Tait's sets) ..
Anyway, I think I'm going to get further engrossed in the AIP and do Bob Tait's questions at the back of his book and chapters .. I'm also considering joining a theory course at my local school