Post Office – Llandysul, Pontsian mobile service – Opening Hours & Branch Details You can visit Post Office on Spar Shop, about a 3.67 mile distance north of the centre of Llandysul (by Saint John Church and Ysgol Pontsian). This branch is an important addition to the locales of Rhydowen, New Inn, Pontsian, Tre-Groes, Maes Y Bwythyn, Penrherber and Prengwyn. It is closed for the whole day (Friday). On this page, you can find hours of operation, address details, direct contact number and further information about Post Office Llandysul, Pontsian mobile service.