Hi duckmcf and welcome to the forum.
Uigeadail is a very good dram and has indeed been discussed quite extensivlely on the forum.
A full selection of discussions may be found by using the search option at the top of the page, but here is a thread which may help to answer some of your questions:http://www.whiskymag.com/forum/viewtopic.php?t=4022&highlight=uigeadail
Thanks for that. There was some good info in that link that helps to decode my bottles. Just for fun (and for anyone that's interested in Ardbeg Codes) I went through my Ardbeg collection and here are the codes;
L4 315 11:14 4ML - Uigeadail
L4 315 13:28 4ML - Uigeadail
L4 350 22:49 4ML - 10YO
L6 090 10:38 4ML - Still Young
L6 089 13:49 4ML - Ooogling
L4 351 04:17 4ML - Very Young
L5 068 15:37 4ML - Serendipity
L6 256 19:03 4ML - 1990 "The Beastie"
L9 292 11:31 4ML - 17YO
So, it seems reasonable that the L number represents the year bottled. L4 = 2004, L5 = 2005, etc. I presume that the L9 on the 17YO equates to 1999 which is plausable. From what I've read, the second sequence of 3 numbers equates to the day of the year, followed by the time of day, the particular bottle was bottled. And finally, 4ML seems to be code for Ardbeg.
Note that the 17YO has this code printed on the bottle, not etched. I also have a 1977, but I couldn't find any other markings on it.