12TB Hard Drive Deals UK 2026: Prime Big Deal Days Offers
· Prime Big Deal Days has ended; the prices below are still live.
As an Amazon Associate we earn from qualifying purchases. Prices and availability shown are from Amazon.co.uk at the last update and may change.
Amazon is flagging 12 offers on this selection right now. The cheapest new price per TB on this page is £25.98/TB, on the HGST WD Ultrastar DC HC520 Hard.
We track 19 in-stock listings for this selection on Amazon.co.uk. Offers below are shown as Amazon states them, then compared with the cheapest listings by £/TB.
Deals Amazon is flagging
In-stock listings where Amazon shows a deal badge, a Prime-exclusive offer, a list price above the current price or low stock. Sorted by Amazon’s stated saving in pounds. We add no verdict.
New
Used (1)
| Product | Capacity | Price | Amazon’s list price | Amazon’s stated saving | £/TB | Condition | Sold by | Buy |
|---|---|---|---|---|---|---|---|---|
| Seagate Exos X18 12To SATA 512e/4Kn | 12 TB | £319.98 | - | - | £26.67 | Used | Third party | Buy on Amazon |
Cheapest alternatives by £/TB
For each offer above, the 3 cheapest in-stock listings of the same type at the same capacity (hard drives within 2TB), with or without an Amazon offer.
New
| Product | Capacity | Price | Amazon’s list price | Amazon’s stated saving | £/TB | Condition | Sold by | Buy |
|---|---|---|---|---|---|---|---|---|
| MDD (MD14TSATA25672NAS) 14TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5" Internal NAS Hard Drive - 5 Years Warranty | 14 TB | £334.75 | - | - | £23.91 | New | AmazonPrime | Buy on Amazon |
Renewed
| Product | Capacity | Price | Amazon’s list price | Amazon’s stated saving | £/TB | Condition | Sold by | Buy |
|---|---|---|---|---|---|---|---|---|
| Toshiba 14TB SATA 512e 256MB Cache 7200RPM 3.5" SATA 6.0Gb/s Enterprise Hard Drive - MG07ACA14TE (Renewed) | 14 TB | £363.29 | - | - | £25.95 | Renewed | AmazonPrime | Buy on Amazon |
| HGST WD Ultrastar DC HC520 Hard Drive | HUH721212ALE601 | 12TB 7200RPM SATA 6Gb/s 256MB Cache 3.5" | ISE 512e | Helium Data Center Internal Hard Drive (Renewed) | 12 TB | £311.74 | - | - | £25.98 | Renewed | AmazonPrime | Buy on Amazon |
Used (1)
| Product | Capacity | Price | Amazon’s list price | Amazon’s stated saving | £/TB | Condition | Sold by | Buy |
|---|---|---|---|---|---|---|---|---|
| Seagate IronWolf, 10 TB, NAS, Internal Hard Drive, CMR, 3.5 Inch, SATA, 6GB/s, 5,400 RPM, 256MB Cache, for RAID Network Attached Storage, 3 year Rescue Services (ST10000VN0004) | 10 TB | £450.00 | - | - | £45.00 | Used | Third party | Buy on Amazon |
Frequently asked questions
When is Prime Big Deal Days 2026?
Prime Big Deal Days 2026 runs on Amazon.co.uk on 6 and 7 October 2026, from 00:01 on 6 October to 23:59 BST on 7 October, with new offers appearing through both days.
Do I need Prime to get these offers?
Yes for offers marked Prime exclusive in our tables: Amazon reserves those for Prime members. The other prices shown are available to every Amazon.co.uk customer.
Is Amazon's list price reliable?
UK consumer protection rules require a reference price to be genuine, and we show it exactly as Amazon states it, with Amazon's own label, without recalculating it.
All Prime Big Deal Days 2026 storage deals
Last updated at 2026-10-22 18:00:46 UTC. As an Amazon Associate I earn from qualifying purchases. Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed at the time of purchase will apply to the purchase of the product. CERTAIN CONTENT THAT APPEARS ON THIS SITE COMES FROM AMAZON SERVICES LLC.