I don't remember Radio Malt, so it's not an age thing.
However, you can still get several different brands of malt extract (with or without cod-liver oil). You can use it to make a malt loaf, or spoon it into your children if you, and they, are so inclined - it might be nice stirred into hot milk as an Ovaltine substitute.
If we are going to have it in the recovery ward, can we have the version without the cod-liver oil?