Many thanks to Paul for finding my darts and passing them on.
Losing them was easy enough; being stupid enough to take them out with the dog for a walk in a coat that doesn't have decent pockets, but getting them returned was a harder journey. Someone found them and left them in a prominent position on a fence. Paul spotted them and left them thinking that the owner would find them easier if he left them where they were. Then he remembered the blog and matched the "lost" story. By this time they'd fallen off the fence and were in a field.
Many thanks to him for digging them out and letting me know. A huge relief, and I'm getting my 26's with the haymakers now :o)