Just ordered a minolta neg/slide scanner for this purpose, seems like a fairly compact machine so can leave it out on desktop and just scan in when time permits instead of doing them all in one go. I can see this getting used extensively (family,friends etc) so only time will tell if this comparitively cheap scanner will last the course but reviews are favorable.
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review link:
The cheapest place I found this was surprisingly Jessops! (£219 inc free shipping)
Oh and there is an optional APS adapter available too but at an extra £75