Astray dogs?

Led where? Astray?

This was taken in Brockwell Park, South East London. It's funny how you don't see the past tense of 'lead' written down very often, especially in public places and I confess I did wonder for a second if it was correct or not.

Also, I've never seen a sign like this before. They normally warn us with: 'Dogs must be kept on a lead' so I wonder who decided to write it this way and why. Are they implying you don't have to use a lead; you just have to lead?

Also, by complete chance Sarah Beany 'that woman off the tele' was with this group of people obeying the rules with their dogs being led in this area. I hope she didn't think I was taking a Pap picture of her! I wanted a picture of the sign, not the celeb in a park pic.