John, not a good story to read, but the fact you're posting and unhurt is pleasing.
Hard to believe you crashed and some scum stole things from you!
Did anyone stop to help you?? The public at large are quite disturbing in this country at times - a motorbike and car collided right in front of me on Tuesday, and despite many people seeing it, not ONE other person stopped! I even got some really funny looks as I stuffed my car on the verge and went to check all were okay!