Greggs – 240 Commercial Road, Portsmouth – Opening Hours & Store Details You will find Greggs ideally situated at 240 Commercial Road, about 1.22 miles south of the centre of Portsmouth (a few minutes walk from City Centre North Bus Stop). This store is perfectly situated to serve people from the locales of Southsea, Milton, Portsea, Somers Town, Baffins, Portsmouth City Centre, Gosport and Old Portsmouth. Open hours for today (Friday) are 7:00 am – 6:00 pm. Here you can find hours of business, location particulars and contact info for Greggs 240 Commercial Road, Portsmouth.