Looking for something for basic surfing and office duties? this Dimension 3100c could be it if you already have a suitable monitor.
307-D083C1 - £270 or less delivered
Intel® Pentium® 4 Processor 531 with HT technology (3.00GHz, 800MHz fsb, 1MB cache) * Genuine Windows® XP Home Edition, SP2 (incl Symantec PC Restore Recovery) * Processor upgrade from Celeron 346 to Pentium 4 531 included in your offer * 256MB Single Channel DDR 533MHz [1x256MB] Memory * 80GB 7200rpm SATA Hard Drive * 48x/32x/48x/16x CDRW/DVD-ROM Combination Drive * No Security/Anti-Virus Protection * Integrated Intel® Graphics Media Accelerator 900 * No Monitor * Integrated 2.0 Channel High Definition Audio
Reduce the warranty to minimum and buy via Quidco for further savings.