Thanks Dave.
Unfortunately, in that there was no
American, European and British Union for the Standardization of Nomenclature of Damascus and Twist Barrels makers could name their barrels whatever they wished, and did, often creatively
Pretty much no chance that Remington's "London", Lefever's and Baker's "Best London Damascus Twist" or Parker's "Fine English Twist" tubes were sourced in England.
"London" is Damascus Twist
"Birmingham", "Ruban" and "Band" are...uh...some other kinds of twist
https://docs.google.com/document/d/1...sIjmr8uy8/edit
And according to Greener VERY little (true) Stub Twist was produced in England after the 1860s as horseshoe stubs became increasingly difficult to obtain