{"url":"https://openpostcodes.uk/BT81","type":"district","district":"BT81","area":"BT","postcode_count":296,"councils":["Derry City and Strabane","Fermanagh and Omagh"],"sectors":[{"sector":"BT81 7","url":"https://openpostcodes.uk/BT81%207","postcode_count":296,"admin_district":"Derry City and Strabane"}]}