Hello Paul,
whether your John Bennett is amongst the mis-sorts needs sorting out by checking the microfilm.
ancestry.com have WO364 available but I am not sure if this includes the mis-sorts.
I have found stuff there, so they need to be checked.
Sorry, I now live away from Kew, otherwise I'd do the look up for you.
You never know, another lister might volunteer. Otherwise you will have to go down the route of NA doing your research (click the Research, Education tab on the home page banner).
Hope this helps,
Dave