16TB 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 18 offers on this selection right now. The cheapest new price per TB on this page is £27.12/TB, on the WD 16TB My Book external hard.

We track 23 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.

ProductCapacityPriceAmazon’s list priceAmazon’s stated saving£/TBConditionSold byBuy
Synology, HAT3310, 16TB, 3.5" SATA Home User HDD, MTBF 1.2 Million Hours16 TB£614.17£659.99Was£45.827%£38.39NewThird partyBuy on Amazon
Seagate 16TB One Touch Desktop Hard Drive | USB-C (STNB16000400) | Bus-powered HDD. Single cable. Requires 15W USB-C power. PC & Mac. Adobe CC & Mylio trial. 2-Year Warranty + 2-Year Rescue16 TB£434.99£466.99Was£32.007%£27.19NewAmazonPrimeBuy on Amazon
WD 16TB My Book Duo Desktop HDD USB 3.1 Gen 1 with software for device management, backup and password protection USB-C and USB-A cables RAID 0/1, JBOD16 TB£633.99£660.99RRP£27.004%£39.62NewAmazonPrimeBuy on Amazon
WD 16TB My Book external hard drive, Desktop HDD with Password Protection, USB 3.0, SuperSpeed USB, software for device management, backup, hardware encryption, works with PC and Mac, Black16 TB£433.99--£27.12NewAmazonPrimeBuy on Amazon
Seagate Barracuda 16TB Internal Hard Drive, 7200 U/Min, 512MB Cache, SATA 6Gb/s, 3.5" (ST16000DM001)16 TB£565.00--£35.31NewThird partyBuy on Amazon
Seagate 16TB ST16000NM001G Exos X16 SATA 6Gb/s 7.2K RPM 512e/4Kn 256Mb, OEM, Mechanical Hard Disk16 TB£570.14--£35.63NewThird partyBuy on Amazon
LaCie 16TB d2 Professional | USB-C (STHA16000800)16 TB£594.92--£37.18NewThird partyBuy on Amazon
Western Digital Ultrastar DC HC550 3.5" 16000 GB Serial ATA III16 TB£595.00--£37.19NewThird partyBuy on Amazon
Seagate SkyHawk AI ST16000VE002 - Hard drive - 16 TB - internal - 3.5" - SATA 6Gb/s - buffer: 256 MB - with 3 years Rescue Data Recovery16 TB£610.00--£38.13NewThird partyBuy on Amazon
Seagate Skyhawk AI 16TB, Video Internal Hard Drive, 3.5 Inch, SATA, 6Gb/s, 256MB Cache, for DVR/NVR Security Camera System, Data Rescue Service (ST16000VE004)16 TB£610.00--£38.13NewThird partyBuy on Amazon
Toshiba N300 16TB Internal NAS Hard Drive, 3.5’’ SATA HDD, 7200 RPM, 24/7 Operation, Supports 1-8 bay systems, 512MB Cache, 180TB/Year workload, 3yr Warranty (HDWG51GUZSVA).16 TB£639.98--£40.00NewThird partyBuy on Amazon
Toshiba 16TB N300 NAS Internal HDD - 3.5" SATA-3 512MB Cache 6GB/s 7200RPM Internal Hard Drive 7/24 NAS Unit Server & Security Drive (HDWG51GUZSVA)16 TB£639.98--£40.00NewThird partyBuy on Amazon
WD Red Pro 16TB NAS 3.5" Internal Hard Drive - 7200 RPM Class, SATA 6 Gb/s, CMR Recording Technology, 512MB Cache16 TB£685.47--£42.84NewThird partyBuy on Amazon
Oyen Digital Novus 16TB External USB-C Rugged 7200RPM Desktop Hard Drive16 TB£769.82--£48.11NewAmazonPrimeBuy on Amazon
WD Gold 16TB HDD 7200rpm 6Gb/s sATA 512MB cache 3.5p internal RoHS compliant Enterprise Bulk16 TB£799.99--£50.00NewThird partyBuy on Amazon
Seagate 16Tb Skyhawk Ai 3.5" Hard Drive ST16000VE005 Sata 6Gb/S/512Mb/7200Rpm16 TB£890.00--£55.63NewThird partyBuy on Amazon
WD 16TB My Book Desktop External Hard Drive, USB 3.0 - WDBBGB0160HBK-NESN16 TB£921.33--£57.58NewThird partyBuy on Amazon
LaCie 16TB 2big Dock | Thunderbolt 3 (STLG16000400) | RAID storage. Creative workflows, CFast & SD slots, up to 550MB/s. Adobe CC trial included. 5-Year Warranty + 5-Year Rescue16 TB£1,094.44--£68.40NewThird partyBuy 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

ProductCapacityPriceAmazon’s list priceAmazon’s stated saving£/TBConditionSold byBuy
MDD (MD14TSATA25672NAS) 14TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5" Internal NAS Hard Drive - 5 Years Warranty14 TB£334.75--£23.91NewAmazonPrimeBuy on Amazon
WD 18TB Elements Desktop External Hard Drive - USB 3.0, Black18 TB£465.99--£25.89NewAmazonPrimeBuy on Amazon

Renewed

ProductCapacityPriceAmazon’s list priceAmazon’s stated saving£/TBConditionSold byBuy
Toshiba 14TB SATA 512e 256MB Cache 7200RPM 3.5" SATA 6.0Gb/s Enterprise Hard Drive - MG07ACA14TE (Renewed)14 TB£363.29--£25.95RenewedAmazonPrimeBuy 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.