What does the D mean?

Inglis intermediates BP......... How were they phased over from Mk1 to Mk1m? I have only ever seen one but know of a few. But even then it's not many

I have 5 on the database, one of which is my own example. I also have another with all markings removed with the exception of a single Nazi ownership mark.

As far as I know there was just the one intermediate and that was pretty much a true Mk1 without the scallops in the magwell sides and marked Mk1m. That suggests to me that there was no more than approx 1000 bodies being produced at any one time.'

I have an Enfield L4A3 converted from a '42 Daimler Mk.II gun.