I had a weekend away, and hoped that the cider would continue it's clearing. It didn't seem to do much, although the top was definitely clearer than the bottom of the bottle. I took another hydrometer reading which was exactly the same, so I decided to bottle anyway.
2009-01-26 Gravity: 1006. So estimate 5.5% abv. Bottled into 1L PET bottles, unprimed and bunged in the cupboard with the first batch of beer. Sneaky taste whilst bottling showed that this brew is currently sharp and apple tasting, probably drinkable, but we'll let it age for a week or two and hopefully clear again (I fear my syphoning skills could do with improvement.)