Thanks Mervyn. I apologies before if this is in the wrong place. Here is a shot of a negative of my grandfather showing two trade patches on the lower arm (the image needs to be reversed).
The bigger one is a drivers patch/badge, the upper one a 6 pointed star. I have only found 5 pointed stars on the net and would like to have info on the six pointed star. Another negative shows them n the upper arm below the shoulder (same arm, both on a BD jacket but I am not sure if its the same BD jacket.
I,ll post other pictures in a more appropriate place.