I have this book but it only mentions 'Guttapercher' twice very briefly as being
around in 1860/1870's time frame on pages 11 & 23. No gang members are named.
The book is mainly about the gangs in the 1920's and it is an excellent read.
Some information here
http://www.thestar.co.uk/news/police-station-on-frontline-in-sheffield-gang-wars-1-6851920
Thank you for the information. I am trying to find the connection with the prosecution of a William Fearnley in 1851 where it was stated that he was part of the Gutta Percha gang.
Once again thank you for the very interesting information.