WardenWatch strikes me as something that might work, but only if there are enough good citizens out there.
Membership is free if you apply before the end of March 2006, then it rises to £10.
However it does require two things:
1. Signed up members who are want to receive a text message advising them to go back to their vehicles.
2. A large number of good citizens willing to spend up to 10p sending a text message that will bring them no benefit except for the small chance that a warden might not complete the issuing of a ticket. I think this bit needs to be incentivised a little more…there are a lot of “what’s in it for me?” folks out there.
I’ll be keeping one eye on the whole thing.