personally I think they are real except maybe the jap one.
The UK Radio promo is 100% genuine, I have 2 of them given to me from a friend who works in radio and I get loads of promos from him so I know they are real. The danish one looks like all the other danish promos I have so again I cant see it being a fake. The japanese one im not sure on as I dont have many jap promos from which to judge. Im mainly an oasis collector but thought I would add that the UK Radio Promo is real.
I think people may have been too quick to judge to be honest