I live in a former (WWII) warzone. How likely is it that those old bombs are going to explode?

Every now and again someone reminds us Londoners of this (which we’d rather not think about):

I know the doper in question is long gone, and the post to which I am replying is 12 years old, but interestingly at the time ralph124c posed his question the answer may have been indeterminate.

But in 2020…

How about “Sane” Catlady - with sane in inverted commas.