A:AnswerNo, it’s new. Unless you explicitly clicked on an available model. But later on, after they are sold out, it may be the case that open-boxes are all that’s available.
A:AnswerFor this version, you will need to use a power adapter designed for UK outlets, but yes, it should work just fine. I strongly recommend getting an HP branded adapter, just to ensure compatibility. You could always go with the converter outlet adapter, but be sure it's made by a trusted rand such as Belkin and not some cheap adapter that may not limit the power properly.