Do you mean as compared to the many Whitworth rifles in existence? ie a specific "Whitworth Rifle Company , Manchester"?

If it is not specific to a "Whitworth Rifle Company , Manchester" (?) a search will show many references to "Whitworth" on the forums - muzzle loaders, various M98 actioned "Whitworths". I myself have a Whitworth .375.

I do not know if it is particular related to a "Whitworth Rifle Company , Manchester" but assume that would be the same, even if just a "brand name" later on. That .303 would be similar too, ie just a re-branded rifle made by someone else (?).