@sco: The Draper set that Sinless, me and a few others have is ideal coupled with a socket set (Halfords on offer or Bahco on offer at Amazon). It is a comprehensive set and has bits that are needed for certain jobs. Example: EGR pipe on the FSI, steering wheel removal or door hinges on any of our cars. The set you linked to has it's uses, but the most used bits in it (eg for headlight removal and undertray removal) can be covered by a £7 set from Aldi or Lidl when on offer (good quality, I don't mean this dismissively).
Best thing for any home mechanic is a Halfords socket set and then build from there! The Halfords sets have most of the smaller torx and alan key sizes you need. Then add the draper one above when you have a job that needs it.