also, i created an example based on the url you provided and it worked
locally without issue after i whitelisted
hdl.handle.net and
dams.llgc.org.uk.
i suggest that once you get the access and whitelisting sorted that
you experiment on the beta server first:
http://commons.wikimedia.beta.wmflabs.org/wiki/Special:GWToolset
with kind regards,
dan