Yes correctimondo, we were just testing you, and wanted to see who would spot it.
Yes it was for the EMPIRE EXHIBITION in 1948 not 38 as I stated earlier.
It is indeed a MK111 with a MK1 Barrel and rear leaf sight. Just found the paperwork for them.
It was one of only two made by the Apprentice Master at Enfield. It has no numbers on it at all as it was never intended to be a firearm, and produced in silver and only made for display purposes.
As stated earlier after speaking to Peter L, the second Bren is on display at the Small Arms Service Corps HQ Warminster.
So the two of them are as rare as Rocking Horse poo!
I sold it with a large number of other De-Acs on the 3rd of July 2014 to a well known dealer in Thames Valley.................no names no pack drill!!