If so I might be able to help. I saw a scummer wheeling it along and challenged him as it was obviously nicked, still had the broken lock hanging off it. He got a bit pissy and sped off but I have a couple of pictures of him and have reported to the Police. I followed him to Stapleton Road, Easton but then I lost him. If it's yours get in touch and I will give you all the details. Nice looking bike and very distinctive so know doubt you are rather hacked off.
Others in Bristol look for a brown Specialzed road bike with a silver pannier rack and double silver bottle cages. Most obvious thing though is that one side the bar tape is pink and the other is white. It would be good to find this bloke and get him nicked as he had obviously done this before.
Don't know whose it might be, but I've cross posted to Track Dropouts (the Bristol fixie/SS forum)