This weekend project #PuttyBW was launched, with installs late last week and lots of visitors over the Birmingham Weekender. The work was originally planned to remain in situ over the weekend of 26th&27th September but as most of it has survived, it will remain installed until 6th October (dependent on survival). Here is an upto date map, if you want to do this trail over the next week. It's slightly makeshift, but hopefully it makes sense. I will try and keep it updated this week.
Here's the storify so far: https://storify.com/JennyD/puttybw
See below for some more photos.