Greggs – Quartermaine Road, Portsmouth – Opening Hours & Store Details Greggs, which currently occupies a unit in Ameiva point, is situated on Quartermaine Road, about a 1.55 mile driving distance east of the centre of Portsmouth (near Great Salterns Golf Course). This store is situated in a convenient location for customers from Fratton, Anchorage Park, Portsmouth City Centre, Baffins, Great Salterns Quay, Portcreek Junction, Hilsea and Guardians Gate. Today (Friday), hours of operation begin at 6:00 am and continue until 6:00 pm. This page includes specifics on Greggs Quartermaine Road, Portsmouth, including the business hours, navigation and email address.