As usual with these events unless you find a way of getting a preview without the public it is an uphill task getting images (without people). Although some with people do give an overall scene of the event. Overall it was a good event, good to see the engines up close but my preference would be to see the alive and moving!!!!
On the whole I think the event from GWR has to go down as a success, I wll certainly attend another should the opportunity arise.
Here is a selection of images from the day.
A full gallery of images can be viewed here: GWR Open Day 2019