This is my small collection of street art I've seen in Bristol. I haven't created any of these works, I just walked around taking pictures. I took photos of what I considered remarkable and I'll leave it to you to interpret them or to decide on their artistic value. (After all, the artists didn't mount explanatory panels next to their works as you'd expect in a museum.)
I will not comment on the location of these works other than that they're all Bristolian. They may be modified or vanish over time and I don't want to deprive you of the experience to explore this city yourself and to discover it yourself. If you refuse to do so for whatever good reason you have, you can google for "Bristol graffiti map" and you'll find links to good maps, much better than anything I can create.
I will try to properly attribute the works as soon as possible.