Post Office – Llandeilo, Ffairfach mobile service – Opening Hours & Branch Details Post Office is easily reached on Carmarthen And Pumpsaint Farmers Ltd, approximately a 0.61 mile drive south from the centre of Llandeilo (by Ffairfach Station). This branch is delighted to provide service to patrons within the districts of Pen-Y-Banc, Rhosmaen, Waunclynda, Llandeilo Town Centre, Derwydd and Ffairfach. Doors are open today (Friday) from 4:15 pm to 5:15 pm, for those who would like to stop by. On this page you can find all the up-to-date information about Post Office Llandeilo, Ffairfach mobile service, including the operating times, branch address info, direct contact number, and further details.