TESCO – Cefn-mawr, Wrexham – Opening Hours & Store Details Tesco Superstore occupies a good position on Oxford Street, about 5.89 miles south-west from the centre of Wrexham, in Cefn-mawr (not far from The Rock Stadium and Ty Mawr Country Park). This supermarket is delighted to serve patrons within the districts of Chirk, Pontcysyllte, Llangollen, Pen-y-cae, Garth, Froncysyllte, Ruabon, Trevor and Cefn-mawr. On this page you will find all the information about TESCO Cefn-mawr, Wrexham, including the opening times, location description and telephone info.