Thomas Cook Group plc is a British global travel company listed on the London Stock Exchange. It was formed on 19 June 2007 by the merger of Thomas Cook AG, itself the successor to Thomas Cook & Son, and MyTravel Group plc. It is listed on the London Stock Exchange and is a constituent of the FTSE 250 Index. The group owns a number of tour operators, as well as airlines based in the United Kingdom, Germany, Belgium and Scandinavia. Thomas Cook also owns the booking website Hotels4u.