I said dilution to 2 litres to be the equivalent of early Rodinal, that gives the same in concentration of stock solution, so you're being a bit pedantic here .

It's always been the convention to make up to the final volume and the BJP is as vague as making this clear in all formulae as many other publications. My point about Ilford & Kodak formulae is that the BJP often published them with out specifically stating that they should be made up to a specific volume while the companies did in their own publications. That goes back to at least the 1890's the BJP doesn't use a different convention.