While Casemate publishes some of their own works, they mainly function as a distributor for other smaller publishers. They distribute Peko, MMP, Pen & Sword. So they would provide sales support , warehousing etc
Pen & Sword in particular is notorious for reprinting without notifying customers it’s a reprint and even changing the title. Got caught once and am now extra careful
For example they list this “new” title
https://www.pen-and-sword.co.uk/The-...rdback/p/17305
Which I’m almost positive is just a reissue of the old Crowood aviation book.