G'dya TDA,
I'll take this one, as I have re-pitched onto the cake twice. Both started with a mild ale and the Ringwood yeast achieved about 76% apparent attenuation on the first 2 occasions, and with a bigger pitch for the second two batches, the yeast gave over 80% apparent attenuation. The mild was brewed at a cool room temp of 16C for about 5 weeks (I may have been a bit lazy about bottling it in a timely manner), and the Pale ale had a gravity of 1.059 s.g. and was pitched at 16C on 1/9/08, but got up to 21C for 3 days last week. I plan to rack this beer today (as soon as I clear another fermentor).
So, the attenuation was approximately the same as the original in both cases.
Any more questions, while I'm thinking about it?
BTW, the Mild ale may have come in a little high in alc %, due to the higher attenuation. The flavours are highly malty, biscuity (due to amber malt), with a restrained bitterness and lingering mild malt and even longer lingering malt (Maris). Muted fruitiness, strong malt and gentle hops (EKG) in the nose. Much better flavour and aroma develops as it warms. Drinkability is rated as "highly sessionable".