Kismet is reporting no encryption, which is funny as the ssid contains WPA. The council hasnt placed any type of sign that is clearly visible(which is breaking the law) , you need a pair of binoculars to see the sticker they have placed at the top of the lamp post :-).What's interesting is that they move them around and leave connection ports on the lamp posts, which are still transmitting as part of the WDS.
I know a little about the system as I found articles on the net. I've identified the cameras they are using as D-link(I have a lovely brochure on them :-))
I went for a walk with my net book in backpack to try and collect more data , but when I had got home I discovered that it had gone into hibernation(doh). Will try again tomorrow.
Thanks guys for the quick response.