Thanks
for your feedback guys. I had great fun taking these shots. This one is actually a bus going through West Gate Tower in Canterbury. Its part of the old Roman wall. You can see it in the other Flickr pics.
Finally got my head round layers so the others on Flickr are all composites of three images. Hope you like, may do another critique thread when I've finished a couple more.
Ike - Bollard was in the very bottom right, you could only see the left half of it and I just cloned it out. I used 100 ISO because the sensor doesn't have to be very sensitive to pick up all the light.