CREATE TABLE table_43 ("Scheme" TEXT, "Tariff code" TEXT, "BTs retail price  ( regulated ) " TEXT, "Approx premium" TEXT, "Prefixes" TEXT)

How many tariff codes have a bts retail price of 2p/min or inclusive?
SELECT COUNT("Tariff code") FROM table_43 WHERE "BTs retail price (regulated)" = '2p/min or inclusive'
SELECT COUNT("Tariff code") FROM "table_43" WHERE "BTs retail price (regulated)" = '2p/min or inclusive'