Post Office – Lampeter, Cribyn Mobile Service – Opening Hours & Branch Details You’ll find Post Office on B4337, approximately a 4.17 mile driving distance north-west of the centre of Lampeter, in Cribyn (a few minutes walk from Cae Hir Gardens). The branch is fittingly located to serve patrons from the districts of Penbryn, Silian, Cribyn, Troed Y Rhiw, Llanfair Clydogau, Capel St Silo, Llanfaredd and Builth Wells. Unfortunately, it’s closed for today (Friday). On this page you’ll find all the information about Post Office Lampeter, Cribyn Mobile Service, including the hours of operation, branch address info or customer rating.