Well, sort of yes and no; the phones are manufactured by an outfit called HMD Global who now own the Nokia mobile phone brand and patents. So it's not the original Nokia but it is based in Espoo in Finland and is headquartered in the building next to the Nokia head office. I think HMS are a subsidiary of Nokia or Nokia owns a substantial percentage of HMD.If I remember correctly, it is not the original NOKIA (still owned by Microsoft), but a "new venture", licencing the NOKIA name.
Nokia / HMD bought back the rights to make Nokia phones from Microsoft along with a ton of patents. I don't think Microsoft have anything to do with Nokia any more.
But yes, £600 for the N8 is a bit steep...