Greggs – Showground Retail Park, Omagh – Opening Hours & Store Details Greggs is directly in Showground Retail Park on Sedan Avenue, a 0.41 mile distance north-east from the centre of Omagh (nearby Omagh Bus Station and Sacred Heart). The store is an important addition to the districts of Lisanelly, Coolnagard Upper, Dergmoney Lower, Lisnamallard, Mullaghmore, Gortmore, Meetinghousehill and Culmore. Today (Friday), it’s open from 7:00 am to 6:00 pm. Please see this page for more information regarding Greggs Showground Retail Park, Omagh, including the working times, place of business address or email contact.