Hi there Murph Great piece very interesting, I hope that even after a few years I can get some futher info on this from you or another member, first of all the link for the map does seem to work for me, however as you say that you are from Lincolnshire you may know about the River Witham and if there is a large population of none native crays, I will be moving close to Bardney Lock and after hearing of the extent of the problem caused by these foreign crayfish in particular the Signal crayfish and being prone to a bit of crustacean tail I would like to see if I can get involved.
The question