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.
We welcome any query on Who When Where. If you have previously posted it on another forum (including the old WDYTYA forum), please state this in your opening post - this will save people redoing the research which has been done before: they can look at it and possibly go further with it.