Goldfinger:
Interesting info Dave, thanks…
Can you ‘define’ the ‘tanks’ class please?
Just to see if it is worth doing that class…?
Hi Goldfinger,
The ADR tanks module is needed on a driver’s ADR card for when a driver needs to drive a tank-vehicle ( = tanker **>1,000L) or tank-container (>**3,000L) that carries any amount of dangerous goods, whether loaded or empty.
The ADR tanks module will always take longer than one calendar day to complete, because there is a rule in the SQA Manual of Practice (= ADR tutor’s bible) that says that an ADR tanks module must contain one overnight break.
Timetabling is a matter for an ADR provider to adjust to suit themselves, as long as the syllabus and programme are followed.
An (initial) ADR tanker module cannot be less than 10 X 45min lessons.
Goldfinger:
BTW, I’m based in SE Northumberland, Just outside Newcastle upon Tyne.
There are a number of ADR providers within easy distance of you.
Do you have enough contact details for different providers to allow you to make a good choice?
Goldfinger:
I’m just weighing my options on what classes to do, and then seeing who may need them classes to then be ‘more’ employable…
That’s if you understand what I mean - no use taking the tanks class, if there’s no one round here that needs a tanker driver… 
IMHO, that’s a very wise way of going about it, if you don’t mind me saying so. 
My honest advice is that you take ADR Core, Packages and Classes 2, 3, 4, 5, 6, 8 and 9, which will give you a very general qualification to carry dangerous goods in packages (Drums, IBCs, boxes, jerricans, crates etc) and loose loaded in bulk tippers and skips.
I’d advise that you opt for 21hrs DCPC to go with it, because you’ll get the 21hrs DCPC just for turning up, which kills two birds with one stone!! This is the option that most people take.
The tanker module and its possible 7hrs (not all providers offer 7hrs DCPC with the tanker module, so it’s best to ask) is entirely your choice to make, but I’d advise you to consider whether you’ll actually need the tanker qualification.
Just for completeness, it is possible to add the tanker qualification at any time later if it turns out that you need it, and you’re not even tied to using the same provider.
On the other hand, some providers offer their tanker module with 7hrs DCPC for silly (cheap) money if you’ve taken the options I’ve suggested above.
I’ve never worked for any of the providers up your way so I couldn’t say who’s better/cheaper than another, so all I can do is to offer some contact details for them if you need them.