Also my thanks. This was the missing piece.
Following the wiki instructions just left the tomcat backend not starting.
Strangely enough copying the dspace/solr/* to /var/solr/data Would enable the tomcat backend server to actually start but not the front end to run.
And then what actually worked was as described by the OP :
mkdir /var/solr/data/configsets
cp -R [dpsace-deploy]/solr/* /var/solr/data/configsets
And an extra detail - running solr as the dspace user, if that makes any difference.
Cheers - A