John’s Supermarket. Name: John’s Supermarket. Type: Shops John’s Supermarket groceries in Hillsborough on Carriacou. About us: Groceries in Hillsborough. Related Phone: (473) 443-8347 Related Recent Ratings Vote 4 from anonymous on Hillsborough – Kim’s Plaza Guesthouse. Vote 5 from anonymous on Carriacou carnival. Vote 1 from anonymous on Battery at Grand Bay. Vote 4 from anonymous on Hillsborough – Hotel Laurena. Vote 2 from anonymous on Harveyvale – the Gallery Cafe of Tyrell Bay.