Hey guys

I am currently looking to do my PPL... as the conversation will tell you in my post a few down from this.  Anyway, im looking at university courses, a number of which include a PPL license.  However i have just found one which offers a National PPL as opposed to a straight PPL

Obviously other than that definition of National, what are the differences between the two licenses and how can the NPPL be converted to a PPL?

Thanks again guys
Danny