WRENS in Birmingham

[Andy J2022]

Sorry! Thats incorrect.

Quoting The National Archives:
(https://www.nationalarchives.gov.uk/help-with-your-research/research-guides/1939-register/)

3.1 The civilian population

These records do include the civilian populations of:

    England
    Wales

These records do not include the civilian populations of:

    the Channel Islands
    the Isle of Man
    Scotland (for information relating to records of individuals in Scotland at the time of the 1939 Register please contact National Records of Scotland)
    Northern Ireland (for information relating to records of individuals in Northern Ireland at the time of 1939 Register please contact Public Record Office of Northern Ireland)

I think you are misreading what TNA is saying. They do not hold the 1939 Register records for N Ireland, Scotland, and the Crown Dependencies of the Channel Islands or the Isle of Man. These places hold or once held the copies of returns relevant to their territories. See: https://www.rootschat.com/forum/index.php?topic=797627.0

[Andy J2022]

It appears that the Channel Islands were not included in the 1939 Registration. See the forward to the Government report on the results of the 1939 National Registration exercise: https://archive.org/details/b32170130/page/n3/mode/2up

[KGarrad]

Andy,

I can assure you that there are no 1939 Register records for IOM.

I have asked, in person, at The Manx Museum (which doubles as the Manx State Archives).

[Andy J2022]

I don't want to get into a long argument about this, but for the sake of others who may want to search on this topic, the Isle of Man did conduct their version of the 1939 Registration; I never maintained that the records for the IoM still exist. And according to the website The Genes Blog the Channel Islands  also conducted their own version of the National Registration in 1939, although the results were not included in the British Government report I linked to earlier.  Again it appears the CI registration has not survived, possibly due to the occupation of the islands by the Germans.