Post Office – Lampeter, Bwlchllan – Opening Hours & Branch Details Post Office is conveniently located on Bwlchllan, about a 6.43 mile drive north of the centre of Lampeter. The branch is located properly to serve those from the areas of Abermeurig, Trefilan, Llwyn Groes, Cilcennin, Llangeitho, Llansantffraid, Bwlchllan and Penuwch. Regrettably, it’s not open today (Friday). Here you’ll find the working hours, local map or contact number for Post Office Lampeter, Bwlchllan.