are they the one on the roundabout, or on the industrial estate?
I have to admit have used both and they are very good, but never used them for Buns.
If you dont mind the trek there is a Great vets here in Cwmbran, most of the staff own buns so they are very savy.
How long have you lived in Brecon? as there is a good chance that you will know me or Tracey