B&M – Omagh – Opening Hours & Store Details B&M Store is situated directly in Great Northern Retail Park on Great Northern Road, approximately a 0.14 mile distance north-west of the centre of Omagh (adjacent to A32 / James Street). This discount store is situated in a convenient district that primarily serves the people of Gortmore, MeetingHouseHill, Lammy, Lisanelly, Omagh Town Centre, Mullaghmenagh Upper, Gortrush and Lisnamallard. Please review the specifics on this page for B&M Omagh, including the store hours, map and contact details.