Time

Euro:
Starting from scratch, how long does it take to get an HGV licence?
apply for a prov car licence
learn to drive
pass theory
pass practical
apply for HGV pass medical
pass theory
pass practical
attend CPCD courses

6 months?

7-8 weeks.
Week 1, theory test for car.
Week 2, 1 week intensive course and test for car.
Week 3, complete HGV medical, apply for license.
Week 6, get license, take theory modules
Week 7, intensive course, test and practical modules.

Might be another week or two depending on how quick you get your provisional HGV and any theory test centre booking issues. 6 months though? Nowhere near.