Returning to HGV Driving

Hi again

Having spent the weekend trawling through the internet trying to get up to speed with all the changes to HGV driving in the past few years, am I right in thinking I have no tests to take as I already have the HGV licence. I have been looking at sample theory and perception tests only to realise that these need to be done before the driving test itself. As I have the licence am I right that I just need to do the CPC. I don’t use the word “just” lightly as I believe it is 35 hours of classroom (currently online) training.