Greggs – Cosham – Opening Hours & Store Details You will find Greggs situated at an ideal location at 18 High Street, 2.05 miles north-east of the centre of Portsmouth, in Cosham (nearby Wayte Street Bus Stop). This store is fittingly situated for patrons from Purbrook, Port Solent, Tipner, Drayton, Hilsea, Paulsgrove, Cosham Town Centre and Anchorage Park. Operating times today (Friday) are from 7:00 am to 6:00 pm. Hours of opening, address details and email contact for Greggs Cosham can be found here.