If you look in lasors on the caa website it gives you a run down on the JAR method of logging the time which is a bit different to the old method.
Also there is a wee bit of debate as to what you log as copilot and PICUS some say you should log everything as copilot others that you should log PNF as co but PF as PICUS.
Personally I can't see how a 160hr Intergrated student couldn't ever gain their ATPL if you could log PF as PICUS but there you go.
MJ