We've got a few near us, no big boys but several microbreweries.
Mantle Brewery Cardigan (8 miles)
A new one: Electro, Cardigan.
Bluestone brewery, nr Newport (7 miles)
Gwaun Valley brewery (12 miles)
Caffle Brewery, Llawhaden (13 miles)
Further away there's Tenby Brewing Co and Tenby Harbour.
All the above are pretty good though I don't know about Electro yet.
We've also had some disasters:
4/4 brewery - made decent beer but no consistency between batches.
Pembrokeshire brewing co., Saundersfoot - obviously had no idea how to make beer at all; absolute filth in a bottle.
Seren brewery, Rosebush. Small scale brewery - sour beer, inconsistant ABVs.
All these have gone.