Heres a potted history of the shubunkin for you :-Many thanks for advice Dave, I am not sure if my shubumkins are cockneys or bristolians needless to say they are as Manx as the hills now (even though they have tails). I will try and take a pic of my two later they are both good looking fish and the bigger one has a fantastic fan tail.
http://www.exoticgoldfish.net/breeds-shubunkin.html
Hope this helps you identify which ones you have
Dave