
Western Digital−40%
Western Digital My Book external hard drive 4 TB 3.5" Micro-USB B 3.2 Gen 1 (3.1 Gen 1) Black
£187.99£314.99
at Back to the OfficeView deal →Two tech & gaming deals from Western Digital, side by side · prices checked 4 Nov 2026


| My Book external hard drive 4 TB 3.5" Mi | Elements WD Portable | |
|---|---|---|
| Price today | £187.99 | £124.99 |
| Previous price | £314.99 (Amazon price) | £166.76 (Amazon price) |
| Discount | 40% | 25% |
| You save | £127 | £41.77 |
| Retailer | Back to the Office | Back to the Office |
The short version: the Elements WD Portable is the cheaper of the two at £124.99 (£63 less than the My Book external hard drive 4 TB 3.5" Mi). The bigger discount is on the My Book external hard drive 4 TB 3.5" Mi at 40% off its amazon price. So it depends whether you want the lower price or the larger saving against list. Both prices were checked this morning and link straight to the retailer.