Post Office – Londonderry, Campsie – Opening Hours & Branch Details Post Office is located in an ideal place at 12 Donnybrewer Road, a 4.45 mile drive north-east from the centre of Londonderry (near to Dupont Industrial and Maydown Fuel Terminal). The branch is properly located to serve customers from the areas of Carmoney, Tully, Upper Campsey, Campsey, Donnybrewer, Carrakeel, Lower Campsey and Cloghole. If you plan to drop in today (Friday), its business times are from 10:00 am until 4:00 pm. Refer to this page for the specifics on Post Office Londonderry, Campsie, including the working hours, address description, email contact and other beneficial information.