4TB SSD 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 38 offers on this selection right now. The cheapest new price per TB on this page is £11.20/TB, on the Asus.

We track 64 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

ProductCapacityPriceAmazon’s list priceAmazon’s stated saving£/TBConditionSold byBuy
Samsung Portable SSD T7, 4TB, Titan Gray, USB3.2, Type-C, R/W(Max) 1,050MB/s, Aluminium Case, 3 Years Warranty (MU-PC4T0T/WW)4 TB£596.51£905.49RRP£308.9834%£149.13NewAmazonPrimeBuy on Amazon
Samsung T7 Shield Portable SSD 4 TB - USB 3.2 Gen.2 External SSD Black (MU-PE4T0S/EU)4 TB£752.42£945.79RRP£193.3720%£188.11NewAmazonPrimeBuy on Amazon
fanxiang SATA SSD 4TB Internal SSD 2.5" SATA III, Up to 550MB/s | 3D NAND TLC with SLC Cache, Internal SSD for laptops and desktop PCs, S1014 TB£309.99£319.99RRP£10.003%£77.50NewThird partyBuy on Amazon
Asus - Boîtier SSD externe ASUS TUF Gaming A2 M.2 NVMe4 TB£44.80--£11.20NewThird partyBuy on Amazon
CRUCIAL X9 2T SSD EXTERNE *CT2000X9SSD9 | 1050MB/s read speed with USB-C and 4TB storage for backups, movies and games4 TB£298.84--£74.71NewThird partyBuy on Amazon
Silicon Power 4TB SSD 3D NAND A5X SLC Cache Performance Boost SATA III 2.5" 7mm (0.28") Internal Solid State Drive (SP004TBSS3A55S25AY)4 TB£332.99--£83.25NewThird partyBuy on Amazon
WD 4TB My Passport Portable SSD, External NVMe Solid State Drive, USB-C, up to 1050 MB/s, Works with PC, Xbox and Playstation, 2-meters drop resistance, Space Grey4 TB£412.05--£103.01NewThird partyBuy on Amazon
Acer SSD FA200 M.2 NVMe PCIe Gen 4 * 4 4TB4 TB£459.79--£114.95NewAmazonPrimeBuy on Amazon
Lexar ARMOR 700 Portable SSD 4TB, Up to 2000MB/s Read and Write, USB 3.2 Gen 2x2 External SSD, IP66 Water & Dust Resistance, Compatible with Mac/PC, iPhone 15 Series, Camera4 TB£463.58--£115.90NewAmazonPrimeBuy on Amazon
SanDisk SSD Ultra 3D 2.5" SATA 4TB, Internal SSD, Read speeds up to 560 MB/s, 3D NAND Technology, SATA III 6GB/s, nCache Technology4 TB£475.00--£118.75NewThird partyBuy on Amazon
Crucial X10 Pro 4TB Portable External SSD, Up to 2100MB/s Read and 2000MB/s Write, External Solid State Drive, USB-C 3.2, PC and Mac, Dust and Water Resistance, Gold - CT4000X10PROSSD9D024 TB£478.99--£119.75NewThird partyBuy on Amazon
SanDisk Desk Drive SSD 4TB, Up to 1000MB/s Read Speeds | External SSD, USB Type-C, High Capacity Solid State Drive, Backup, Archive, Acronis True Image Software4 TB£499.00--£124.75NewAmazonPrimeBuy on Amazon
SABRENT M.2 NVMe SSD 4TB Internal Solid State 3450MB/s Read, PCIe 3.0 X4 2280, M2 Hard Drive High Performance Compatible with PCs, NUCs Laptops, and Desktops (SB-ROCKET-4TB)4 TB£499.99--£125.00NewThird partyBuy on Amazon
WD_BLACK SN7100 4TB NVMe SSD, M.2 2280, Read speeds up to 7000 MB/s, Write Speed up to 6,700 MB/s, Next Gen TLC 3D NAND, DASHBOARD, Up to 2,400TBW, For Laptops, handheld gaming devices4 TB£531.40--£132.85NewAmazonPrimeBuy on Amazon
SanDisk Extreme PRO Portable SSD 4TB, Up to 2000MB/s Read Speeds, Monterey | External SSD, USB-C, Water & Dust Resistant, Up to 3M Drop Protection, 256 bit AES Encryption, Ideal for PC, Mac, Consoles4 TB£538.00--£134.50NewThird partyBuy on Amazon
SanDisk Creator PRO Portable SSD 4TB, Up to 2000MB/s Read Speeds | External SSD, Up to 3M Drop Protection, IP65 Water & Dust Resistance, Space for AI Content, 1 Month Adobe Creative Cloud4 TB£549.53--£137.38NewThird partyBuy on Amazon
Lexar SL500 External SSD 4TB, USB3.2 Gen2x2 Portable SSD, PSSD up to 2000MB/s Read, 1800MB/s Write, External Solid State Drive with Metal Design, DataShieldTM 256-bit AES Encryption(LSL500X004T-RNBNG)4 TB£559.26--£139.82NewAmazonPrimeBuy on Amazon
WD_BLACK 4TB P50 Game Drive SSD USB-C USB 3.2 Gen 2x2 External NVMe Solid State Drive up to 2000 MB/s works with Playstation, Xbox, PC, & Mac4 TB£571.42--£142.85NewAmazonPrimeBuy on Amazon
Kingston XS2000 4TB External SSD USB 3.2 Gen 2 Portable Solid State Drive -SXS2000/4000G4 TB£574.00--£143.50NewThird partyBuy on Amazon
WD_BLACK SN850X NVMe SSD 4TB (Up to 7,300 MB/s read speed, Up to 6,600 MB/s write speed, M.2 2280, PCIe Gen4, Gaming Storage Expansion, High Performance Internal solid state drive) POWERED BY SANDISK4 TB£599.00--£149.75NewThird partyBuy on Amazon
WD_BLACK SN850X WDS400T2XHE - SSD - encrypted - 4 TB - internal - M.2 2280 - PCIe 4.0 x4 (NVMe) - TCG Opal Encryption 2.4 TB£625.00--£156.25NewThird partyBuy on Amazon
SanDisk Professional PRO-BLADE Transport including PRO-BLADE 4TB SSD MAG. USB-C up to 2000MB/s4 TB£634.00--£158.50NewThird partyBuy on Amazon
Gigastone Home NAS SSD 4TB 24/7 Durable TLC High Durability Personal Server Cloud Data Storage RAID 3D NAND 2.5 Inch SATA III Internal Solid State Hard Drives4 TB£669.99--£167.50NewThird partyBuy on Amazon
SanDisk Professional PRO-BLADE 4TB SSD Mag up to 3000MB/s | Portable, Ultra-Durable, SDPM1NS-004T-GBAND, Ultra-Durable - SDPM1NS-004T-GBAND4 TB£671.49--£167.87NewThird partyBuy on Amazon
X10 PRO 4TB PORATBLE SSD4 TB£682.00--£170.50NewThird partyBuy on Amazon
Lexar SL500 Portable Solid State Drive 4TB Up to 2000MB/s Read Compatible with Type C Laptops, iPhone 15, Smartphones, Tablets, PS5, Xbox, USB 3.2 Gen 2x2, Slim and Lightweight, SSD4 TB£760.23--£190.06NewAmazonPrimeBuy on Amazon
WD Red SN700 4TB NVMe SSD for NAS devices, with robust system responsiveness and exceptional I/O performance4 TB£766.68--£191.67NewThird partyBuy on Amazon
SANDISK Extreme Portable SSD 4TB, Up to 2000MB/s Transfer Speed(New Model) | External SSD, USB-C, IP65 Water & Dust Resistant, Up to 3M Drop Protection, 256-bit AES Encryption, Space for AI-content4 TB£790.00--£197.50NewThird partyBuy on Amazon
WD_BLACK SN8100 PCIe Gen 5 NVMe SSD 4TB (Up to 14,900MB/s read, 14,000MB/s write speeds, Next Gen TLC 3D CBA NAND, Up to 2,400TBW, Best for AI Applications, Gaming, Video Editing) POWERED BY SANDISK4 TB£810.00--£202.50NewThird partyBuy on Amazon
Seagate FireCuda 530R NVMe SSD 4TB, for PS5/PC, M.2 PCIe Gen4 ×4 NVMe 1.4, up to 7.400 MB/s, 3D-TLC-NAND, 5.050TBW, Data Rescue Service (ZP4000GM3A063)4 TB£844.99--£211.25NewThird partyBuy on Amazon
SanDisk Professional 4TB PRO-G40 SSD external Drive, Portable SSD, up to 3000 MB per sec, Thunderbolt 3 (40Gbps), USB-C (10Gbps), Ultra-rugged with IP68 rating for dust and water resistance4 TB£865.24--£216.31NewAmazonPrimeBuy on Amazon
Corsair MP700 PRO 4TB M.2 PCIe Gen5 x4 NVMe 2.0 SSD – M.2 2280 – Up to 12,400MB/sec Sequential Read – High-Density TLC NAND – Black4 TB£882.95--£220.74NewAmazonPrimeBuy on Amazon
Nextorage Japanese manufacturer External SSD 4TB USB 40Gbps USB4 Gen3x2 Type-C Maximum read speed 3900MB/s Maximum write speed 3800MB/s Windows MacOS iPadOS compatible 4000GB NX-PS1PRO4TB Portable SSD4 TB£1,091.98--£273.00NewThird partyBuy on Amazon
Solidigm D7 Series D7-P5520 - SSD - 3.84 TB - Internal - 2.5" - U.2 PCIe 4.0 x4 (NVMe)3.84 TB£1,599.00--£416.41NewThird partyBuy on Amazon
Solidigm D3 Series D3-S4520 - SSD - 3.84 TB - Internal - 2.5" (6.4 cm) - SATA 6Gb/s3.84 TB£2,423.96--£631.24NewThird partyBuy on Amazon
Solidigm D7-PS1010 Series - SSD - Enterprise - 3.84 TB - Internal - 2.5" - U.2 PCIe 5.0 x4 (NVMe)3.84 TB£3,450.00--£898.44NewThird partyBuy on Amazon
Used (2)
ProductCapacityPriceAmazon’s list priceAmazon’s stated saving£/TBConditionSold byBuy
Samsung 990 EVO Plus, 4TB, PCIe 4.0 x4 / 5.0 x2, NVMe2.0 (up to 7250 MB/s), NVMe M.2 (2280), Internal Solid State Drive (SSD), MZ-V9S4T0BW4 TB£560.00--£140.00UsedThird partyBuy on Amazon
SanDisk Professional PRO-G40 Portable SSD 4TB (up to 3000 MB/s, Solid State Drive, Thunderbolt 3 (40Gbps), USB-C (10Gbps), Ultra-rugged IP68 dust/water resistance. Formatted exFAT)4 TB£899.99--£225.00UsedThird 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
Asus - Boîtier SSD externe ASUS TUF Gaming A2 M.2 NVMe4 TB£44.80--£11.20NewThird partyBuy on Amazon
CRUCIAL X9 2T SSD EXTERNE *CT2000X9SSD9 | 1050MB/s read speed with USB-C and 4TB storage for backups, movies and games4 TB£298.84--£74.71NewThird partyBuy on Amazon
fanxiang SATA SSD 4TB Internal SSD 2.5" SATA III, Up to 550MB/s | 3D NAND TLC with SLC Cache, Internal SSD for laptops and desktop PCs, S1014 TB£309.99£319.99RRP£10.003%£77.50NewThird partyBuy on Amazon
Silicon Power 4TB SSD 3D NAND A5X SLC Cache Performance Boost SATA III 2.5" 7mm (0.28") Internal Solid State Drive (SP004TBSS3A55S25AY)4 TB£332.99--£83.25NewThird partyBuy on Amazon
Samsung 870 QVO 4 TB SATA 2.5 Inch Internal Solid State Drive (SSD) (MZ-77Q4T0)4 TB£395.99--£99.00NewThird partyBuy on Amazon
Fikwot FX991 4TB SSD, M.2 2280 NVMe SSD, PCIe Gen4x4, Up to 7300MB/s, HMB+SLC, High Performance Gaming Internal Solid State Drive for PS5, Laptops, Desktop(PC)4 TB£429.99--£107.50NewThird partyBuy on Amazon
fanxiang NVMe SSD 4TB M.2 2280 PCIe Gen4, Up to 7000MB/s4 TB£429.99--£107.50NewThird partyBuy on Amazon
Ediloca 4TB NVMe M.2 SSD PCIe Gen 4x4, Up to 7000MB/s Read, M.2 2280 Internal Solid State Drive, Dynamic SLC Cache, Compatible with PC, Desktop and Laptops(EN880E)4 TB£429.99--£107.50NewThird partyBuy on Amazon
Solidigm D7 Series D7-P5520 - SSD - 3.84 TB - Internal - 2.5" - U.2 PCIe 4.0 x4 (NVMe)3.84 TB£1,599.00--£416.41NewThird partyBuy on Amazon
Solidigm D7-PS1010 Series - SSD - Enterprise - 3.84 TB - Internal - 2.5" - U.2 PCIe 5.0 x4 (NVMe)3.84 TB£3,450.00--£898.44NewThird partyBuy on Amazon
Micron MTFDLAL3T8THG-1BP1DFCYYR 7600 PRO 3.84TB NVMe PCIe 5.0 U.2 Enterprise Solid State Drive3.84 TB£3,849.22--£1002.40NewThird partyBuy on Amazon
Used (1)
ProductCapacityPriceAmazon’s list priceAmazon’s stated saving£/TBConditionSold byBuy
Intel 4TB SSD DC P4510 2.5 U.2 NVMe PCIe SSDPE2KX040T8 SSDPE2KX040T801 Solid State Drive for Dell HP Lenovo Supermicro4 TB£743.99--£186.00UsedThird partyBuy 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.

4TB SSD Deals UK 2026 | Prime Big Deal Days Offers