Reddit reviews Great Eastern Entertainment Hetalia England Passport Wallet

So, apparently I'm moving to England for a job opening I got! Wohoo!
Thing is, when I got to apply, they told me that I would have to become a citizen and swear to some guy with busy eyebrows.
I don't know, but after I did, he gave me this
I'm not sure what to say about it. . can any Englisman tell me what I'm supposed to do with it?

♫I've got a lovely bunch of coconuts, tereleedee. . .♪