British Universal Carriers
I next sprayed a basecoat of Humbrol Dark Green to the underneath of the model to add shadow when I do the main basecoat.
As with some of my other metal models I can't remember the manufacturer of these. They come with separate tracks. I have a feeling, based on internet research, that they are SDD miniatures.
The idea is the keep the main part of the model with a white undercoat and the undersides to be darker than the rest of the model.
After that was dry I did the main basecoat of Warpaint British Armour.