Hoping that this is the correct place to post this, or should we start a Welsh Speaking Settlement thread?
Glyn Neath -
Although it's only just "up the road" from me, I tend only to pop in for the Esso Garage (Tesco). It has a Cymraeg feel to it although I've never actually heard any spoken on the off-chance. I'm hopeful though, as I have heard Welsh in Neath.
Does anyone have any first-hand Knowledge?
Incidentally, I nicked this bit of history from Wiki:
Glynneath is home to the ruins of Aberpergwm House. Once owned by Rhys ap Siancyn, Aberpergwm House became the home of the Williams family, Welsh gentry with a strong tradition of using the Welsh language over English.