Mamya has kindly linked to the site which I always recommend. (The computer I'm using to type this came from them. I've used them before several times, both when buying for myself and on behalf of friends. Their products and service are both excellent).
Of the computers shown on that page, I'd probably go for the HP Prodesk 6305 myself, at £119. However, given that the PC won't be connected to the internet (so there's no security risk through using Windows Vista), there's not really any reason for missing out on the Fujitsu model at £59; it can run software such as OpenOffice perfectly well and most printers should still be compatible with it.
If your mate only ever prints in black and white then a mono laser printer might suit his needs best. Brother's HL-1112 model gets good reviews and is particularly economical to run:
https://www.brother.co.uk/printers/mono-laser-printers/hl1112
It's widely available (in PC World, Argos, Ryman, etc) for around £60.
If he prints in colour then Canon is probably the most popular brand with AB members. Those models which use separate cartridges for each ink colour work out cheapest to run and PC World are currently offering the excellent MG5750 (which is the updated version of the MG5350 that I use) for half price, at just £49.99:
https://www.pcworld.co.uk/gbuk/computing-accessories/printers-scanners-and-ink/printers/canon-pixma-mg5750-all-in-one-wireless-inkjet-printer-10143745-pdt.html
So, including the carriage on the Fujitsu PC, I reckon that you could get a decent computer and a cracking printer for around £125 in total.