Yume no Shima Shinen Kōen
Royal Mail is a bit random. Sometimes they get through a 1st class package pretty quickly but in other cases it would be 2-3 days later.I had an order ship on Tuesday that only arrived today. I think royal mail is being a bit slow at the moment. I've noticed it with some other stuff as well.
At least it ain't Amazon where a Prime order went to Hermes rather than Amazon Logistics.