Who When Where

IMO it is really poor to have no less than 207 files in series WO 423 (Other Ranks and Nurses) where the Christian name of the person is missing from TNA's Discovery catalogue and is catalogued as "[Unspecified]", including the one below which has no name at all.

WO 423/188943: [1939-1963]: Name: [Unspecified] 221791. Service number: 3649699. Date of birth: 22 April 1905.