Where are Records for Local Workhouse in Southall, Middlesex in 1945?

[Bookbox]

I have looked at the record again and it says From: WMCH  Length of time in Workhouse: 3 days. Could this be West Middlesex County Hospital?

Yes, see here
https://ezitis.myzen.co.uk/westmiddlesex.html

The records are at The London Archives in the collection West Middlesex University Hospital and Associated Hospitals (series H 36), but they are closed to public access for the period you need.
https://search.lma.gov.uk/LMA_DOC/H36.PDF

You can ask the archivists to search them and extract anything found. Their charges are quite high (£86.00/hour), so you may find it cheaper to engage an independent researcher to visit the archive on your behalf. But contact the archive first to check the procedure.

[Boudicca95]

That's great. Will look for the info and then see about researcher. Thanks.

[mazi]

   https://ezitis.myzen.co.uk/westmiddlesex.html

This will tell you about the history of WMCH, at one point it incorporated the old workhouse


Added
I see bookbox has already mentioned this,, my apologies bookbox