I have not read all of this thread, so apologies if it has already been covered.
I fail to see how people can expect to receive details from all residents at an address. As to give that information for a living person would breach their rights to privacy; and you cannot very well ask a question along the lines of '...please provide details of all people at this address who are no longer living.".
Ken
Far easier just to write-
I wish to request under the Freedom of Information Act details of the residents
of XX Street, X town from the 1939 National Registration.
The NHS-IC have a database that tells them whether the people are alive or dead.
If they are alive the NHS-IC will redact their information, If they are dead the NHS-IC will release the information.
Why make things difficult?
There will be a number of people who slip through the net such as those who emigrated, very occasionally it may be necessary to supply further details (perhaps details of their death).
When dealing with civil servants never volunteer more information than necessary.
Cheers
Guy