Seagate STCG4000200 Central 4TB Personal Cloud Storage. Went in looking for a WD my book live that was at quite a reasonable price before I saw this. Reviews look good from what I've seen, and the price was actually £20 less than the 3TB option!
Not sure if it's national as it's not listed on their site, but I asked a sales rep and they seemed to think the prices are what they are. Good luck to anyone interested!
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