(For a Reuters live blog on U.S., UK and European stock markets, click LIVE/ or type LIVE/ in a news window) Aug 10 (Reuters) - European stocks hit a record high on Tuesday, extending gains to a seventh straight session, boosted by travel and leisure companies as investors took comfort from strong earnings reports. The pan-European STOXX 600 index gained 0.2% by 0717 GMT, notching an all-time high of 471.67 points. The travel and leisure sector was the top percentage gainer as Flutter Entertainment rose 4.8% after the world’s largest online betting group said its first-half results exceeded estimates and it expects U.S. business to turn a profit by 2023. Berlin-based meal-kit firm HelloFresh added 1% after it reported strong second-quarter growth, as a rise in customers and continued high order rates bumped up sales. Dutch food ingredients group Corbion tumbled 8.1% to the bottom of STOXX 600 after it cut its full-year adjusted EBITDA margin outlook. (Reporting by Sruthi Shankar in Bengaluru; Editing by Amy Caren Daniel) Our Standards: The Thomson Reuters Trust Principles.