Bayonut:
Ian Skennerton's "British & Commonwealth Bayonets"(or"Bayonuts"?), is one of the best books written on British and U.K. bayonets that I have read.
On page 301 he writes, "During World War 2, Hugh Carson Co. Ltd. also manufactured replacement scabbards because the spares were no longer available from store."
As is well known, Britain and the U.K. were terribly short on weapons of any sort.
After Dunkirk in 1940, Britain was asking all countries to send aid in the manner of rifles and hand guns, since most of their equipment was left on the beaches during the evacuation.
I can remember the U.S. asking for donations to send to them and I believe "The Rifleman" also had ads asking for help.
Obviously, the Canadians were mobilizing and were using the Ross rifle and some needed scabbards for their Mark I and Mark II bayonets.
I would say that your scabbard would be a rather scarce item.
Good Hit!
Jack