I had to share this with the users of the Online Genealogical Index as it is an excellent resource for researching more recent ancestors from 1939.
The 1939 Register used to be only available on findmypast with a special additional subscription and is still the only place to see the original images from this collection.
MyHeritage now hosts a copy of the 33+ million records of those living in England and Wales in 1939.
MyHeritage also offers free accounts for members of the LDS Church
(LDS members can sign up by going to http://familysearch.org/partneraccess and click on MyHeritage)
MyHeritage is also available at any LDS Family History Center (find one near you here)
BUT the collection is not well advertised on their site so you can find it by doing the following once you have your own account....
1. Login at http://www.myheritage.com
2. Put your mouse over (do NOT click) the heading "Research"
3. Click on "Collection Catalog"
4. Click on the image or heading for "1939 Register of England & Wales" (or type the word '1939' into the search field at the top of the list and hit Enter)
The direct link to this collection is: https://www.myheritage.com/research/collection-10678/1939-register-of-england-wales
You can now search for your ancestor! Those younger than 100 years who have not been matched to a death record will be hidden in the results. Every year, as the 100 year mark approaches, more records will become visible.