William Davies (sometimes credited William Davis or Will Davies) is an English screenwriter and film producer. He has written and co-written a number of films including 1988's Twins, The Real McCoy, Johnny English, Alien Autopsy, Flushed Away, How to Train Your Dragon, Johnny English Reborn and Puss in Boots. The British-born Davies is a graduate of Mercersburg Academy and Cambridge University. He is the brother of television producer Michael Davies and the opera singer Rebecca de Pont Davies.

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