Thanks so much for all the comments and support everyone, it's heartening.
Addled, it may not be an epidemic in your area but in mine, I can often walk 50 yards and see 10 instances, so in my neighbourhood it really is. Other parents have described the school run as an obstacle course or slalom, because there's so much of it.
I'll post the petition shortly but thanks for the suggestion, I think a FB page or group might help facilitate the sharing of evidence, to help identify people and assist the council in taking action against them. NJTA would you mind forwarding me that email if you're a subscriber? I'm not familiar with it, TIA.
Thanks Janee and Moomoo, I will alert the council chap to this thread and your comments, do you mind sharing where this 'open space' is?
The council have said they'll look at providing a better interface for people to submit photos and videos, because I think the community being self-policing is key to this. In the mean time, two officers came to my flat yesterday to download a video onto a memory stick and follow up, so I'd urge any of you with door cams to set them to motion and help catch these selfish people.
In case I didn't already post them, here are the details you need to report people 020 8871 7606, or by e mail at: firstname.lastname@example.org