'Whig' - Well, you have a real British No. 5 Bayonet. It certainly appears to have seen use and the one (lighter colored) grip panel was replaced.

The canvas hanger is British, but, the metal scabbard is improvised from a scabbard for some other country's bayonet and not correct.

After the Jungle Carbine and Bayonet were discontinued, the scabbards were still useful and recycled for later model bayonets.