The UK franchise of U.S.-based Domino's Pizza Inc reported a 27.7% jump in underlying profit before tax for the six months ended June 27, and added an additional 35 million pounds ($48.61 million) to its existing 45 million pounds share buyback programme.

($1 = 0.7200 pounds)

(Reporting by Chris Peters in Bengaluru; Editing by Ramakrishnan M.)