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That is a weird one, even googling the url its not showing it.  Stinks of a penalty but you have no msg in GWTs and the backlinks look clean (even a backlink from RTE, which should be golden).  And it seems google is caching it ok http://webcache.googleusercontent.com/search?q=cache:ZXKkuLuk6UkJ:www.yourdairygold.ie/+&cd=1&hl=en&ct=clnk&gl=ie The only thing I noticed is that www.butteritwithdairygold.ie is 301 redirecting to it, and I thought that maybe that domain is burnt, but again its backlink profile seems clean.

Hi, Hopefully you already read John Doherty's post about the hreflang as he successfully tested the hreflang. His post could be found here. Hope this helps!