RM - with stocks of older Ardbeg drying up fast the existing Uigeadail is sure to be out of stock soon IMHO. The older flip-top boxes did say it contained older barrels from 70's sherry casks, I forget exactly what the newer (standard boxes similar to Ardbeg Ten) say.
I think this is discussed on other threads so check previous discussions.
Last time I asked a rep at a tasting will young Uigeadail replace the old one he said 'You could well be right there'.
Check out RMW's notes on how the profile has changed since launch:
http://www.royalmilewhiskies.com/produc ... 0000019353
It has been mentioned here before that older stock contained 70's oloroso barrels whereas newer stuff had later 70's fino barrels in the mix.
Anyway, it is a favourite of mine so I've stocked up on the old flip-top boxed stuff (last time Oddbins had it on offer) and I suggest you check your local Oddbins any of this. At £33 it would be rude not to!