I am sorry to disagree, Fed, but this ammo was made by Royal Laboratory in 1918.
I have examples of all of these loads in my collection, plus ball which had a purple neck seal. Chris Punnet mentions them all in his .30-06 book.
Tony, yes, you are absolutely right. I added this comment because I was thinking of cartridges in these loadings with components entirely made in England, something that was supposed to be but never was.