Best External Hard Drives 4tb Deals Online in the UK (25 Deals Found)

Last Updated - 19/09/2026 Sort By:

Best Choice
Toshiba

New
Toshiba Canvio Flex 4TB – Portable 2.5’’ External Hard Drive (HDD) for Mac, Windows PC, Smartphone and Tablet Use, Compa
One Drive, many Devices: The Canvio Flex offers storage in its most compatible form, enabling you to seamlessly store an

£124.00 £144.00
Best Value
Seagate

New
Seagate Expansion Desktop 4TB, External Hard Drive, USB 3.0, Data Rescue Services (STKP4000400)
Easy-to-use desktop hard drive—simply plug in the power adapter and USB cable

£144.00
New
Portable Drive 4TB External Hard Drive Classic Black - PC Laptop and MAC
Built with a premium aluminum alloy enclosure, it combines durability, portability, and efficient performance in a sleek

£17.22
WD

New
WD 5TB Elements AE Portable External Hard Drive, SuperSpeed USB 3.2 Gen 1/USB 3.0, Plug-and-Play, Formatted for Windows,
Effortless Expandability This plug-and-play hard drive lets you expand your capacity in seconds, so you can keep your im

£155.99
New
4TB External Hard Drive Disk Memory Storage USB 3.0 HDD for PC Laptop Phones
Available capacities are 1TB / 2TB / 4TB. 2:Original USB data cable 1. Storage temperature: 0℃~40℃. Storage Capacity The

£23.49
Toshiba

New
Toshiba Canvio Partner 4TB Portable 2.5’’ External Hard Drive, USB 3.2, Mac & Windows compatible. (HDTB540EK3CB)
High Capacity: The Toshiba Canvio Partner provides 4TB of storage space, allowing you to store a vast amount of data, in

£155.99
Seagate

New
Seagate One Touch 4TB, Password activated hardware encryption, portable external hard drive, PC, Notebook & Mac, USB 3.0
Store and access photos and files with Seagate One Touch, an on-the-go USB drive for Windows and Mac (reformatting may b

£153.99
New
Portable External Hard Drive USB 4TB High Capacity Storage for PC Laptop Mac
Applicable system: windows 7,8,10,11 and mac os Android. 2:Original USB data cable 1. Storage temperature: 0℃~40℃. Avail

£22.53
Western Digital

New
WD_BLACK P10 4TB Game Drive, Portable External Hard Drive, Speeds Up to 130 MB/s, USB 3.2 Gen 1, Works with Playstation,
Up to 6TB capacity that can hold up to 150 games, so that you can save old favorites and still have room for new titles.

£137.99
Used
G-tech 4TB thunderbolt USB 3 External Hard Drive
Fast spinning (7200 RPM) drive for high data rate projects. Like new. Only used for one short video edit project and the

£83.90
Toshiba

New
Toshiba Canvio Gaming 4TB – Portable 2.5’’ External Hard Drive compatible with most PlayStation, Xbox and PC consoles, U
Play more. Worry less. Spend more time conquering levels and less time scrambling to make room for the hottest new game

£139.84
Western Digital

New
WD 5TB My Passport portable external storage, external hard drive, USB 3.0, portable HDD with software for device manage
Every journey needs a passport. The My Passport drive is trusted, portable storage that gives you the confidence and fre

£156.40 £161.99
New
2-4TB External Hard Drive Disk Memory Storage USB 3.0 HDD for PC Laptop Phones
2:Original USB data cable 1. Storage temperature: 0℃~40℃. Storage Capacity. The usable storage shown by your device may

£17.99
Seagate

New
Seagate Expansion Desktop, 4TB, External Hard Drive, USB 3.0, 2 year Rescue Services (STKP4000402)
Easy-to-use desktop hard drive—simply plug in the power adapter and USB cable

£144.00
New
2-4TB External Hard Drive Disk USB 3.0 HDD Memory Storage for PC Laptop Phone UK
Speed Up Your Backup with ModusTech HDD. 1 x USB 3.0 HDD. Effortlessly protect your data with the lightning-fast backup

£23.99
ModusTech

New
ModusTech 4TB Desktop External Hard Drive (NOT-PORTABLE) — Vault USB-C 3.1 (5Gbps) High-Speed HDD for PC, Mac, Laptop &
High-capacity desktop external hard drive with up to 20TB of storage The ModusTech Vault Classic is a 3.5-inch desktop e

£90.00
New
Portable Drive 2TB 4TB External Hard Drive Classic Black - PC Laptop and MAC
Keep your important files safe and accessible with this 2TB Portable External Hard Drive . Capacity: 2TB. 1 × 2TB Portab

£25.99
New
4TB External Hard Drive Disk Memory Storage USB 3.0 HDD for PC Laptop Phones
Available capacities are 1TB / 2TB / 4TB. 2:Original USB data cable 1. Storage temperature: 0℃~40℃. Storage Capacity The

£21.97
New
4TB External Hard Drive Disk Memory Storage USB 3.0 HDD for PC Laptop Phones
Available capacities are 1TB / 2TB / 4TB. 2:Original USB data cable 1. Storage temperature: 0℃~40℃. Storage Capacity. Th

£23.45
Used
Seagate Expansion 4TB USB 3.0 Portable External Hard Drive
The Seagate Expansion STEA4000400 is a 4TB USB 3.0 portable external hard drive, part of Seagate's Expansion product lin

£81.82
Used
Seagate Backup Plus 4TB Blue Portable External Hard Drive USB 3.0 SRD00F1

£88.88
Used
Seagate 4TB USB 3.0 Portable External Hard Drive
great working condition

£90.00
Used
Seagate External Hard Drive SRD00F1 4TB USB
Seagate External Hard Drive SRD00F1 4TB USB

£89.10
New
1TB 4TB 16TB 18TB Desktop HDD External Hard Drives PC Mac USB Extended Storage
Capacity: 500GB 1TB 2TB. 2.5" USB 3.0 External HDD. 3.5" USB 3.2 External HDD. - Interface: USB 3.0 (USB 2.0 compatible)

£26.99
New
Adata HD710 Pro 4TB External Hard Drive - Black - USB 3.1 IP68 Waterproof
The Adata HD710 Pro 4TB External Hard Drive in black is a portable external HDD designed to be water and dust resistant

£159.30

25 External Hard Drives 4tb deals are available from: Amazon, eBay stores, starting from £17.22.
The biggest discount we found is 14% on Toshiba Canvio Flex 4TB – Portable 2.5’’ External Hard Drive (HDD) for Mac, Windows PC, Smartphone and Tablet Use, Compatible with Most USB-C and USB-A Devices, Warm Silver (HDTX240ESCCA) at Amazon.
The lowest price we found is £17.22 while the highest is £159.30.
Prices for the best External Hard Drives 4tb deals average at £87.95.
Last updated on September 19, 2026.
We scanned these quality online stores and more to deliver you with the best offers online available for External Hard Drives 4tb.