A British casualty was Lt John Benham Turner, 11th Hussars, according a 2005 post on wwtalk.com.
A 2007 story in the Colchester Gazette/Standard tells that the Italian submarine may have been torpedoed by a British ship his brother Hugh was serving on... However, this ship was HMS Porpoise, an RN submarine. Not sure if this sub was in any way involved.
In a tank regiment like the 11th Hussars, you also have
squadrons...
Also see this Italian website with name of Turner and all Italian casualties:
http://conlapelleappesaaunchiodo.blo...2/narvalo.html
Regards, Leendert