It is an error on part of the server administrator (ed). He must be moving stuff around on his server, because requesting http://plantpeanuts.co.uk/resource results in a 404 response.
SHIT DLH BEAT ME TO IT!
the URL "http://plantpeanuts.co.uk/resource" does not exist (404 Error) The map cannot be reached b/c the URL does not exist. Neither does it exist on the resource. Thus the backup repository will not work.