TESCO – Llansamlet, Swansea – Opening Hours & Store Details TESCO Extra can be found in Swansea Enterprise Park on Nantyffin North, a 3.08 mile drive north-east from the centre of Swansea, in Llansamlet (near Trallwn Primary School and St Samlet Grave Yard). This supermarket mainly serves the people in the locales of Winch Wen, Morriston, Copper Quater, Coed Darcy, Bonymaen, Tregof, Birchgrove and Cwmrhydyceirw. Here you will find the specifics for TESCO Llansamlet, Swansea, including the working hours, address description, email address and additional essential information.