Samsung ML-1610 mono Laser Printer is now available at Amazon.co.uk for £39.99 + £5.89 delivery.
This is the cheapest price I could find anywhere for this printer.
Manufacturer's Description: The new Samsung ML-1610 monochrome laser printer packs professional quality printing into a stylish compact printer. Suitable for any small office or corporate setting; it gives you top-rated performance, easy-to-use features with Samsung's stunning signature design.
Supports Windows and various Linux OS. Requires only 4 clicks to install, and there is no need to re-start your PC once installed. USB 2.0 compatible. Toner-save button resulting in up to 40% toner saving. High-capacity 2,000-page yield toner cartridge can meet even large business printing needs. Ships with a 1,000-page toner cartridge to get you started.