I am a modular student, but only as I am clearly retarded and not intelligent or skilled enough for an integrated course.
Fact is I have a PPL already and am most of the way to being eligible to begin the CPL course (exams passed) - no point in starting from scratch and spending £30k more than I need to! I would have found it much easier to do an integrated course, but I am successful at work so it would be a financial disaster to throw all that away - as is the case for a lot of people.
There is a wealth of information on these forums, so you should encourage your nephew to browse for himself.