HI @ClockworkOcean, many thanks for replying. My apologies for a delay, I have been away on holiday for 2 weeks.
I did try setting this option which did solve the problem for these provided meshes in the starter content.
My new issue is that when I have an actor made up of multiple static meshes, with the base static mesh as the root component of the actor, the collision settings of the child static meshes do not work… or are not observed.
I am currently trying to understand how to generate collision settings on a single model using Blender 2.8 to see if I can fix it that way… but now having to learn Blender 