Hi Rebecca. What aspect of DG vehicles are you looking for?

undertaking mechanical maintenance work on class 1, 3 and 9 vehicles

Hi Rebecca. Replying as myself this time rather than Monex!
We run class 3 tankers, but outsource our DG related maintenance to the likes of MFI and Tanker Solutions.
The SOPs for the various classes will be different depending on the DG Class involved and whether you are just maintaining say wheels vs. the DG compliant aspects of the unit.
If you are not in competition with the above companies they may be a first port of call for you.

thanks for your help