Search:

There are only a handful of royal cutlers. I'm probably missing a couple but off the top of my head - Joseph Rodgers, Thomas Turner, Harrison Brothers & Howson.

Well, the royals are well known for not producing anything themselves, so the clever people who supplied them with goods after the industrial revolution brought mass production figured out they can...

No, they're nice razors, but don't have royal warrant - it's just the usual lack of knowledge being compensated with making stuff up.